(react-slider) - Removing null children

[czearing]

Pull request checklist

• Addresses an existing issue: Fixes Slider Convergence #18886
• Include a change request file using $ yarn change

Description of changes

With the Slot null rendering implementation, the Slider component no longer requires a null render for children.

[fabricteam]

📊 Bundle size report

_{🤖 This report was generated against 6e53bbfe97c9f065d2e2063fefec9b01689891c7}

[size-auditor]

Asset size changes

Size Auditor did not detect a change in bundle size for any component!

Baseline commit: 6e53bbfe97c9f065d2e2063fefec9b01689891c7 (build)

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 8539a77:

Sandbox	Source
Fluent UI React Starter	Configuration

[fabricteam]

Perf Analysis (@fluentui/react)

No significant results to display.

All results

Scenario	Render type	Master Ticks	PR Ticks	Iterations	Status
Avatar	mount	967	928	5000
BaseButton	mount	976	928	5000
Breadcrumb	mount	2603	2571	1000
ButtonNext	mount	455	449	5000
Checkbox	mount	1626	1632	5000
CheckboxBase	mount	1430	1428	5000
ChoiceGroup	mount	5035	5165	5000
ComboBox	mount	1029	1014	1000
CommandBar	mount	10501	10502	1000
ContextualMenu	mount	6409	6440	1000
DefaultButton	mount	1236	1233	5000
DetailsRow	mount	3929	3955	5000
DetailsRowFast	mount	3921	3929	5000
DetailsRowNoStyles	mount	3746	3802	5000
Dialog	mount	2225	2218	1000
DocumentCardTitle	mount	147	157	1000
Dropdown	mount	3348	3369	5000
FluentProviderNext	mount	7021	7058	5000
FocusTrapZone	mount	1825	1778	5000
FocusZone	mount	1759	1733	5000
IconButton	mount	1810	1808	5000
Label	mount	340	329	5000
Layer	mount	1769	1818	5000
Link	mount	461	466	5000
MakeStyles	mount	1767	1809	50000
MenuButton	mount	1531	1493	5000
MessageBar	mount	2156	2075	5000
Nav	mount	3458	3433	1000
OverflowSet	mount	1111	1195	5000
Panel	mount	2117	2132	1000
Persona	mount	896	873	1000
Pivot	mount	1416	1494	1000
PrimaryButton	mount	1393	1430	5000
Rating	mount	8074	8591	5000
SearchBox	mount	1395	1382	5000
Shimmer	mount	2638	2751	5000
Slider	mount	2042	1984	5000
SpinButton	mount	5077	5476	5000
Spinner	mount	418	420	5000
SplitButton	mount	3406	3302	5000
Stack	mount	554	530	5000
StackWithIntrinsicChildren	mount	1603	1641	5000
StackWithTextChildren	mount	4825	4786	5000
SwatchColorPicker	mount	10768	10388	5000
Tabs	mount	1386	1440	1000
TagPicker	mount	2636	2694	5000
TeachingBubble	mount	12019	12108	5000
Text	mount	454	451	5000
TextField	mount	1488	1493	5000
ThemeProvider	mount	1241	1213	5000
ThemeProvider	virtual-rerender	599	620	5000
Toggle	mount	876	898	5000
buttonNative	mount	123	117	5000

Perf Analysis (@fluentui/react-northstar)

Perf tests with no regressions

Scenario	Current PR Ticks	Baseline Ticks	Ratio
ButtonMinimalPerf.default	205	178	1.15:1
ChatWithPopoverPerf.default	420	381	1.1:1
LayoutMinimalPerf.default	412	373	1.1:1
ChatDuplicateMessagesPerf.default	341	313	1.09:1
GridMinimalPerf.default	393	363	1.08:1
CarouselMinimalPerf.default	516	484	1.07:1
ImageMinimalPerf.default	425	398	1.07:1
TextMinimalPerf.default	377	352	1.07:1
FormMinimalPerf.default	462	441	1.05:1
ListMinimalPerf.default	555	527	1.05:1
AnimationMinimalPerf.default	433	416	1.04:1
ChatMinimalPerf.default	730	703	1.04:1
DropdownManyItemsPerf.default	789	758	1.04:1
ListWith60ListItems.default	708	679	1.04:1
TextAreaMinimalPerf.default	550	529	1.04:1
AlertMinimalPerf.default	283	275	1.03:1
BoxMinimalPerf.default	383	373	1.03:1
CheckboxMinimalPerf.default	2926	2841	1.03:1
SegmentMinimalPerf.default	363	354	1.03:1
SkeletonMinimalPerf.default	376	365	1.03:1
AttachmentMinimalPerf.default	176	172	1.02:1
ButtonSlotsPerf.default	578	565	1.02:1
DialogMinimalPerf.default	806	793	1.02:1
InputMinimalPerf.default	1347	1317	1.02:1
ListCommonPerf.default	682	667	1.02:1
LoaderMinimalPerf.default	733	718	1.02:1
PortalMinimalPerf.default	177	174	1.02:1
ReactionMinimalPerf.default	418	408	1.02:1
CustomToolbarPrototype.default	3925	3860	1.02:1
TooltipMinimalPerf.default	1066	1041	1.02:1
AttachmentSlotsPerf.default	1163	1155	1.01:1
DividerMinimalPerf.default	399	397	1.01:1
DropdownMinimalPerf.default	3201	3183	1.01:1
EmbedMinimalPerf.default	4362	4326	1.01:1
ItemLayoutMinimalPerf.default	1360	1346	1.01:1
SliderMinimalPerf.default	1607	1597	1.01:1
TableManyItemsPerf.default	2046	2019	1.01:1
TableMinimalPerf.default	429	423	1.01:1
ButtonOverridesMissPerf.default	1820	1823	1:1
CardMinimalPerf.default	610	610	1:1
DatepickerMinimalPerf.default	5672	5665	1:1
HeaderMinimalPerf.default	399	400	1:1
HeaderSlotsPerf.default	821	820	1:1
ListNestedPerf.default	596	594	1:1
MenuButtonMinimalPerf.default	1764	1766	1:1
RefMinimalPerf.default	225	226	1:1
SplitButtonMinimalPerf.default	3969	3966	1:1
StatusMinimalPerf.default	700	703	1:1
TreeMinimalPerf.default	819	821	1:1
FlexMinimalPerf.default	300	302	0.99:1
ToolbarMinimalPerf.default	988	1001	0.99:1
TreeWith60ListItems.default	189	190	0.99:1
AccordionMinimalPerf.default	163	166	0.98:1
LabelMinimalPerf.default	414	421	0.98:1
MenuMinimalPerf.default	894	913	0.98:1
ProviderMinimalPerf.default	1049	1065	0.98:1
RadioGroupMinimalPerf.default	483	494	0.98:1
AvatarMinimalPerf.default	215	221	0.97:1
ProviderMergeThemesPerf.default	1607	1660	0.97:1
VideoMinimalPerf.default	655	678	0.97:1
IconMinimalPerf.default	629	653	0.96:1
RosterPerf.default	1264	1337	0.95:1
PopupMinimalPerf.default	602	632	0.95:1