Theme docs: Update appearance-tools docs to reflect opt-in for backgroundSize and aspectRatio (#59165)

Co-authored-by: andrewserong <andrewserong@git.wordpress.org>
Co-authored-by: fabiankaegy < fabiankaegy@git.wordpress.org>

Author: andrewserong

docs/how-to-guides/themes/global-settings-and-styles.md

@@ -294,10 +294,10 @@ Note, however, that not all settings are relevant for all blocks. The settings s
 
 There's one special setting property, `appearanceTools`, which is a boolean and its default value is false. Themes can use this setting to enable the following ones:
 
-- background: backgroundImage
+- background: backgroundImage, backgroundSize
 - border: color, radius, style, width
 - color: link
-- dimensions: minHeight
+- dimensions: aspectRatio, minHeight
 - position: sticky
 - spacing: blockGap, margin, padding
 - typography: lineHeight

docs/reference-guides/theme-json-reference/theme-json-living.md

@@ -31,7 +31,7 @@ Code editors can pick up the schema and can provide helpful hints and suggestion
 
 Setting that enables the following UI tools:
 
-- background: backgroundImage
+- background: backgroundImage, backgroundSize
 - border: color, radius, style, width
 - color: link
 - dimensions: aspectRatio, minHeight

schemas/json/theme.json

@@ -20,7 +20,7 @@
 			"type": "object",
 			"properties": {
 				"appearanceTools": {
-					"description": "Setting that enables the following UI tools:\n\n- background: backgroundImage\n- border: color, radius, style, width\n- color: link\n- dimensions: aspectRatio, minHeight\n- position: sticky\n- spacing: blockGap, margin, padding\n- typography: lineHeight",
+					"description": "Setting that enables the following UI tools:\n\n- background: backgroundImage, backgroundSize\n- border: color, radius, style, width\n- color: link\n- dimensions: aspectRatio, minHeight\n- position: sticky\n- spacing: blockGap, margin, padding\n- typography: lineHeight",
 					"type": "boolean",
 					"default": false
 				}