Fix type inference errors with kotlinc 1.9.0

Fixes:
frameworks/base/packages/SystemUI/customization/src/com/android/systemui/shared/clocks/ClockRegistry.kt:68:35: error: type mismatch: inferred type is TKey but TKey & Any was expected
val result = this.putIfAbsent(key, value)
^
frameworks/base/packages/SystemUI/customization/src/com/android/systemui/shared/clocks/ClockRegistry.kt:68:40: error: type mismatch: inferred type is TVal but TVal & Any was expected
val result = this.putIfAbsent(key, value)
^

Bug: 291335478
Test: builds
Change-Id: I73573f097832f6f4d5983f364b0dca3a59ad88a8