drivers: led: pca9633: exit sleep mode on init.
drivers: led: pca9633: exit sleep mode on init.

Driver does not correctly take ic out from sleep mode on init.
Added logic to update mode register on init to take the leddriver
out from sleep mode.
See datasheet for register details.
Fixes #37180

Signed-off-by: Daniel N. Hansten <1f1f4e81a6825f4bfec0a48454ebc163d0701625@gmail.com>

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