Revert transitionTime type for stepHue and stepTransition

[mkardous-silabs]

Problem

PR #9767 did not respect spec type for transitionTime for stepHue and stepSaturation

Change overview

Changed transitionTime to uint8 as specified by the spec

Testing

Manual testing to check that Color Control commands are functionnal

[woody-apple]

@Damian-Nordic ?

[github-actions]

Size increase report for "esp32-example-build" from 083c9ad

File	Section	File	VM
chip-all-clusters-app.elf	.flash.text	-12	-12

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-all-clusters-app.elf and ./pull_artifact/chip-all-clusters-app.elf:

sections,vmsize,filesize
[Unmapped],0,12
.debug_loc,0,2
.riscv.attributes,0,-2
.flash.text,-12,-12
.debug_info,0,-50
.debug_line,0,-62