Fix getViteConfig() type definition (#11046)

Author: HiDeoo

.changeset/popular-colts-happen.md

@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Fixes `getViteConfig()` type definition to allow passing an inline Astro configuration as second argument

packages/astro/config.d.ts

@@ -1,6 +1,7 @@
 type ViteUserConfig = import('vite').UserConfig;
 type ViteUserConfigFn = import('vite').UserConfigFn;
 type AstroUserConfig = import('./dist/@types/astro.js').AstroUserConfig;
+type AstroInlineConfig = import('./dist/@types/astro.js').AstroInlineConfig;
 type ImageServiceConfig = import('./dist/@types/astro.js').ImageServiceConfig;
 type SharpImageServiceConfig = import('./dist/assets/services/sharp.js').SharpImageServiceConfig;
 
@@ -13,7 +14,10 @@ export function defineConfig(config: AstroUserConfig): AstroUserConfig;
 /**
  * Use Astro to generate a fully resolved Vite config
  */
-export function getViteConfig(config: ViteUserConfig): ViteUserConfigFn;
+export function getViteConfig(
+	config: ViteUserConfig,
+	inlineAstroConfig?: AstroInlineConfig
+): ViteUserConfigFn;
 
 /**
  * Return the configuration needed to use the Sharp-based image service