Roll back to React 17 in docs template (#3129)

The docs example template includes Algolia’s Docsearch components to provide a search bar but this doesn’t support React 18 yet, so will error when dependencies are being installed.

See https://discord.com/channels/830184174198718474/965413318678425600

.changeset/mighty-teachers-fail.md

@@ -0,0 +1,5 @@
+---
+'@example/docs': patch
+---
+
+Fix mismatched React versions

examples/docs/package.json

@@ -14,8 +14,8 @@
     "@docsearch/react": "^3.0.0",
     "@types/react": "^17.0.44",
     "preact": "^10.7.1",
-    "react": "^18.0.0",
-    "react-dom": "^18.0.0"
+    "react": "^17.0.0",
+    "react-dom": "^17.0.0"
   },
   "devDependencies": {
     "@astrojs/preact": "^0.1.1",

pnpm-lock.yaml

@@ -94,16 +94,16 @@ importers:
       '@types/react': ^17.0.44
       astro: ^1.0.0-beta.12
       preact: ^10.7.1
-      react: ^18.0.0
-      react-dom: ^18.0.0
+      react: ^17.0.0
+      react-dom: ^17.0.0
     dependencies:
       '@algolia/client-search': 4.13.0
       '@docsearch/css': 3.0.0
-      '@docsearch/react': 3.0.0_6ca7f4f00738722475e8daa3551a29ae
+      '@docsearch/react': 3.0.0_5377e26b52c02809078cfcbfa66845b0
       '@types/react': 17.0.44
       preact: 10.7.1
-      react: 18.0.0
-      react-dom: 18.0.0_react@18.0.0
+      react: 17.0.2
+      react-dom: 17.0.2_react@17.0.2
     devDependencies:
       '@astrojs/preact': link:../../packages/integrations/preact
       '@astrojs/react': link:../../packages/integrations/react
@@ -3372,7 +3372,7 @@ packages:
     resolution: {integrity: sha512-1kkV7tkAsiuEd0shunYRByKJe3xQDG2q7wYg24SOw1nV9/2lwEd4WrUYRJC/ukGTl2/kHeFxsaUvtiOy0y6fFA==}
     dev: false
 
-  /@docsearch/react/3.0.0_6ca7f4f00738722475e8daa3551a29ae:
+  /@docsearch/react/3.0.0_5377e26b52c02809078cfcbfa66845b0:
     resolution: {integrity: sha512-yhMacqS6TVQYoBh/o603zszIb5Bl8MIXuOc6Vy617I74pirisDzzcNh0NEaYQt50fVVR3khUbeEhUEWEWipESg==}
     peerDependencies:
       '@types/react': '>= 16.8.0 < 18.0.0'
@@ -3384,8 +3384,8 @@ packages:
       '@docsearch/css': 3.0.0
       '@types/react': 17.0.44
       algoliasearch: 4.13.0
-      react: 18.0.0
-      react-dom: 18.0.0_react@18.0.0
+      react: 17.0.2
+      react-dom: 17.0.2_react@17.0.2
     transitivePeerDependencies:
       - '@algolia/client-search'
     dev: false
@@ -8175,7 +8175,6 @@ packages:
   /object-assign/4.1.1:
     resolution: {integrity: sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=}
     engines: {node: '>=0.10.0'}
-    dev: true
 
   /object-hash/2.2.0:
     resolution: {integrity: sha512-gScRMn0bS5fH+IuwyIFgnh9zBdo4DV+6GhygmWM9HyNJSgS0hScp1f5vjtm7oIIOiT9trXrShAkLFSc2IqKNgw==}
@@ -8732,6 +8731,17 @@ packages:
       strip-json-comments: 2.0.1
     dev: true
 
+  /react-dom/17.0.2_react@17.0.2:
+    resolution: {integrity: sha512-s4h96KtLDUQlsENhMn1ar8t2bEa+q/YAtj8pPPdIjPDGBDIVNsrD9aXNWqspUe6AzKCIG0C1HZZLqLV7qpOBGA==}
+    peerDependencies:
+      react: 17.0.2
+    dependencies:
+      loose-envify: 1.4.0
+      object-assign: 4.1.1
+      react: 17.0.2
+      scheduler: 0.20.2
+    dev: false
+
   /react-dom/18.0.0_react@18.0.0:
     resolution: {integrity: sha512-XqX7uzmFo0pUceWFCt7Gff6IyIMzFUn7QMZrbrQfGxtaxXZIcGQzoNpRLE3fQLnS4XzLLPMZX2T9TRcSrasicw==}
     peerDependencies:
@@ -8741,6 +8751,14 @@ packages:
       react: 18.0.0
       scheduler: 0.21.0
 
+  /react/17.0.2:
+    resolution: {integrity: sha512-gnhPt75i/dq/z3/6q/0asP78D0u592D5L1pd7M8P+dck6Fu/jJeL6iVVK23fptSUZj8Vjf++7wXA8UNclGQcbA==}
+    engines: {node: '>=0.10.0'}
+    dependencies:
+      loose-envify: 1.4.0
+      object-assign: 4.1.1
+    dev: false
+
   /react/18.0.0:
     resolution: {integrity: sha512-x+VL6wbT4JRVPm7EGxXhZ8w8LTROaxPXOqhlGyVSrv0sB1jkyFGgXxJ8LVoPRLvPR6/CIZGFmfzqUa2NYeMr2A==}
     engines: {node: '>=0.10.0'}
@@ -9137,6 +9155,13 @@ packages:
     resolution: {integrity: sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==}
     dev: false
 
+  /scheduler/0.20.2:
+    resolution: {integrity: sha512-2eWfGgAqqWFGqtdMmcL5zCMK1U8KlXv8SQFGglL3CEtd0aDVDWgeF/YoCmvln55m5zSk3J/20hTaSBeSObsQDQ==}
+    dependencies:
+      loose-envify: 1.4.0
+      object-assign: 4.1.1
+    dev: false
+
   /scheduler/0.21.0:
     resolution: {integrity: sha512-1r87x5fz9MXqswA2ERLo0EbOAU74DpIUO090gIasYTqlVoJeMcl+Z1Rg7WHz+qtPujhS/hGIt9kxZOYBV3faRQ==}
     dependencies: