i18n fallbacks fixed for concurrent builds; stale dev CSS resolved

Patch Changes

• #17536 ff97b86 Thanks @dmgawel! - Fixes concurrent static builds failing to generate i18n rewrite fallbacks for dynamic routes

• #17383 296e1b0 Thanks @thelazylamaGit! - Fixes stale dev CSS after editing component style blocks and CSS files in dev

• #17543 bbc1ec9 Thanks @ematipico! - Adds a feature to experimental.collectionStorage that allows to change the size of chunks.

  For example, you can reduce the size of chunks to 1MB:

  // astro.config.mjs
  import { defineConfig } from 'astro/config';
  
  export default defineConfig({
    experimental: {
      collectionStorage: {
        type: 'chunked',
        chunkSize: 1024 * 1024,
      },
    },
  });

• #17545 5214663 Thanks @ematipico! - Bumps the Astro compiler to the latest version. Changelog.