Add an option to force IDF's default UART clock source #3833

Job	Run time
Generate matrix	3s
Push event file	3s
Build (validation, esp32h2) / Build validation tests for esp32h2	3m 10s
Build (validation, esp32c6) / Build validation tests for esp32c6	3m 10s
Build (validation, esp32) / Build validation tests for esp32	3m 10s
Build (validation, esp32c3) / Build validation tests for esp32c3	3m 9s
Build (validation, esp32s2) / Build validation tests for esp32s2	3m 10s
Build (validation, esp32p4) / Build validation tests for esp32p4	3m 10s
Build (validation, esp32s3) / Build validation tests for esp32s3	3m 11s
QEMU	1s
Hardware	1s
	22m 18s

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