feat: #1297 Improve focus behavior

[deandreamatias]

Connection with issue(s)

Close #1296
Close #1290
Close #1301
Close #1304
Close #1292

Connected #1297
Solve partially #1450

Solution description

• Implement a solution with base on Introduce consistent behaviour for focus and keyboard input #1297
• When focus widgets that open dialogs, like FormBuilderDateTime and FormBuilderDateRange, not open dialog automatically. Need to press SPACE to open the dialog FormBuilderDate[Time|Range]Picker: Web/Accessibility: Comply with WCAG 2.1 A-level criterion "On Focus" #1301
• FocusNode (internal or set on property by developer) is passed to FormBuilderCheckbox, FormBuilderChoiceChip, FormBuilderRadioGroup, FormBuilderFilterChip and FormBuilderCheckboxGroup [General] FocusNode not passed to FormBuilderCheckbox, FormBuilderRadioGroup #1296
• Disabled focus request when field is disabled
• Remove WidgetOrderTraversalPolicy to solve [General]: Focus behaviour navigating using tab on conditional fields #1290
• Add a many focus test to validate solutions

Knowledge base

• https://docs.flutter.dev/ui/adaptive-responsive/input
• https://docs.flutter.dev/ui/interactivity/focus
• Publish a prerelease to developers test https://dart.dev/tools/pub/publishing#publishing-prereleases

Unsolved issues

• Focus to can change RangeSlider. Depends on Flutter SDK [Material] Add focus state, highlight state, and keyboard shortcuts to RangeSlider flutter/flutter#53958

Screenshots or Videos

To Do

• Read contributing guide
• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add unit test to verify new or fixed behaviour
• If apply, add documentation to code properties and package readme

[codecov]

Codecov Report

Attention: Patch coverage is 97.12919% with 6 lines in your changes missing coverage. Please review.

Project coverage is 90.09%. Comparing base (3ef4125) to head (125f1a7).
Report is 18 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/src/fields/form_builder_filter_chips.dart	90.47%	2 Missing ⚠️
lib/src/form_builder_field.dart	0.00%	2 Missing ⚠️
lib/src/fields/form_builder_checkbox_group.dart	92.30%	1 Missing ⚠️
lib/src/fields/form_builder_radio_group.dart	92.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1453      +/-   ##
==========================================
+ Coverage   88.15%   90.09%   +1.93%     
==========================================
  Files          21       21              
  Lines         777      828      +51     
==========================================
+ Hits          685      746      +61     
+ Misses         92       82      -10     

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