feat(zigbee): Save network channel after 1st joining for faster rejoin #3587

Job	Run time
Generate matrix	4s
Push event file	3s
Build (validation, esp32) / Build validation tests for esp32	4m 57s
Build (validation, esp32c3) / Build validation tests for esp32c3	3m 27s
Build (validation, esp32c6) / Build validation tests for esp32c6	4m 22s
Build (validation, esp32h2) / Build validation tests for esp32h2	3m 7s
Build (validation, esp32p4) / Build validation tests for esp32p4	3m 36s
Build (validation, esp32s2) / Build validation tests for esp32s2	4m 37s
Build (validation, esp32s3) / Build validation tests for esp32s3	5m 49s
QEMU	0s
Hardware	0s
	30m 2s

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