InputControl: Fix LabelWrapper line-height inconsistency

[mirka]

Due to an extra wrapper, the labels on InputControl-based components render with a slightly different height than those based on BaseControl. This is currently necessitating a hack in ToolsPanel, where the such components are frequently rendered side by side:

gutenberg/packages/components/src/tools-panel/styles.ts

Lines 124 to 135 in e3136a4

	/**
	* Standardize InputControl and BaseControl labels with other labels when
	* inside ToolsPanel.
	*
	* This is a temporary fix until the different control components have their
	* labels normalized.
	*/
	&& ${ LabelWrapper } {
	label {
	line-height: 1.4em;
	}
	}