Fix tsc errors in shipped Font.astro and Picture.astro when using @astrojs/ts-content-mapper

.changeset/frank-papayas-float.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fixes type errors reported in Astro's built-in `<Picture />` and `<Font />` components when type-checking a project with `tsc` and `@astrojs/ts-content-mapper`

packages/astro/components/Font.astro

@@ -1,4 +1,5 @@
 ---
+// @ts-ignore-error The types for this are only present at dev time, but this file might get type checked by end users through tsc
 import { componentDataByCssVariable } from 'virtual:astro:assets/fonts/internal';
 import { filterPreloads } from '../dist/assets/fonts/core/filter-preloads.js';
 import { AstroError, AstroErrorData } from '../dist/core/errors/index.js';

packages/astro/components/Picture.astro

@@ -75,9 +75,9 @@ const originalSrc = await resolveSrc(props.src);
 // When inferSize is set for a remote image, resolve dimensions once and thread them through
 // to all getImage() calls. This avoids multiple redundant HTTP requests to the same URL,
 // which can trigger rate-limiting (HTTP 429) on servers like Wikimedia.
-if (props.inferSize && isRemoteImage(originalSrc)) {
+if ('inferSize' in props && props.inferSize && isRemoteImage(originalSrc)) {
 	const remoteSize = await inferRemoteSize(originalSrc);
-	delete props.inferSize;
+	delete (props as { inferSize?: boolean }).inferSize;
 	props.width ??= remoteSize.width;
 	props.height ??= remoteSize.height;
 }