Fix for System Layer event handler crash

[sweetymhaiske]

Problem

System Layer Handler crash when level change commands are sent in quick succession.

Summary of Changes

For 0 delay StartTimer( ) invokes the handler immediately, which collides with the handler invoked by emberEventControlSetActive.

Fixes #5678

[github-actions]

Size increase report for "esp32-example-build" from c5fff85

File	Section	File	VM
chip-all-clusters-app.elf	.flash.text	-40	-40

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
.shstrtab,0,-1
.xt.prop._ZTVN4chip24LifetimePersistedCounterE,0,-2
.symtab,0,-16
.debug_line,0,-22
.flash.text,-40,-40
.strtab,0,-51
.debug_loc,0,-85
.debug_abbrev,0,-93
.debug_info,0,-102

Comparing ./master_artifact/chip-pigweed-app.elf and ./pull_artifact/chip-pigweed-app.elf:

sections,vmsize,filesize

[github-actions]

Size increase report for "nrfconnect-example-build" from c5fff85

File	Section	File	VM
chip-lock.elf	device_handles	-12	-12
chip-lock.elf	text	-132	-132
chip-lighting.elf	device_handles	4	4
chip-lighting.elf	text	-132	-132

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-lock.elf and ./pull_artifact/chip-lock.elf:

sections,vmsize,filesize
.shstrtab,0,-3
device_handles,-12,-12
.debug_line,0,-24
.debug_ranges,0,-24
.debug_abbrev,0,-39
.debug_info,0,-77
.debug_loc,0,-100
.symtab,0,-112
text,-132,-132
.strtab,0,-161

Comparing ./master_artifact/chip-shell.elf and ./pull_artifact/chip-shell.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-lighting.elf and ./pull_artifact/chip-lighting.elf:

sections,vmsize,filesize
device_handles,4,4
.shstrtab,0,-3
.debug_line,0,-21
.debug_ranges,0,-24
.debug_abbrev,0,-68
.debug_info,0,-79
.debug_loc,0,-104
.symtab,0,-112
text,-132,-132
.strtab,0,-161

[sweetymhaiske]

For reference, I am mentioning the comment of @rwalker-apple

1. bring in ember eventing code (please don't sqaush) #2475 (comment)
2. Use Chip event inside emberAfEventControlSetDelayMS #2915 (comment)