Makes spacing consistent in zoom out vertical toolbar (WordPress#63994)

* chore: Update block vertical toolbar height in variables and styles

* Removed the variable and hardcoded the value.

* Avoid changes to components package

* use the button width scss variable

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Co-authored-by: amitraj2203 <amitraj2203@git.wordpress.org>
Co-authored-by: getdave <get_dave@git.wordpress.org>
Co-authored-by: draganescu <andraganescu@git.wordpress.org>
Co-authored-by: richtabor <richtabor@git.wordpress.org>

packages/block-editor/src/components/block-tools/style.scss

@@ -201,4 +201,9 @@
 		background: none;
 		border: none;
 	}
+
+	// Make the spacing consistent between controls.
+	.components-button {
+		height: $button-size-next-default-40px;
+	}
 }