RangeControl: Reset button isn't disabled when expected

[mirka]

The reset button when allowReset={ true } is not disabled when the value cannot be reset anymore.

For example in this story, with initialPosition={ 50 }:

CleanShot.2024-07-02.at.23.47.02-converted.mp4

The disable logic looks wrong, because value is number | null and will never be undefined:

gutenberg/packages/components/src/range-control/index.tsx

Line 329 in c56aa97

disabled={ disabled || value === undefined }

There should probably be some consolidation with the handleOnReset logic, so that the reset button will be disabled when the resetValue is null:

gutenberg/packages/components/src/range-control/index.tsx

Lines 168 to 173 in c56aa97

	const handleOnReset = () => {
	let resetValue: number | null = parseFloat( `${ resetFallbackValue }` );
	let onChangeResetValue: number | undefined = resetValue;
	if ( isNaN( resetValue ) ) {
	resetValue = null;