(chore) Move react-positioning, react-utilities, react-theme to react-components subfolder (#22709)

Author: TristanWatanabe

.github/CODEOWNERS

@@ -106,14 +106,14 @@ packages/react-docsite-components @microsoft/fluentui-v8-website
 packages/react-file-type-icons @jahnp @bigbadcapers
 packages/react-hooks @microsoft/cxe-red
 packages/react-monaco-editor @microsoft/fluentui-v8-website
-packages/react-positioning @microsoft/teams-prg
+packages/react-components/react-positioning @microsoft/teams-prg
 packages/react-overflow @microsoft/teams-prg
 packages/react-shared-contexts @microsoft/teams-prg
 packages/react-components/react-storybook @microsoft/cxe-prg @microsoft/teams-prg
 packages/react-components/react-storybook-addon @microsoft/cxe-prg
 packages/react-components/react-tabster @microsoft/teams-prg
-packages/react-theme @microsoft/teams-prg
-packages/react-utilities @microsoft/teams-prg
+packages/react-components/react-theme @microsoft/teams-prg
+packages/react-components/react-utilities @microsoft/teams-prg
 packages/storybook @microsoft/cxe-prg @microsoft/teams-prg
 packages/style-utilities @dzearing
 packages/style-utilities/src/interfaces @phkuo @dzearing

change/@fluentui-react-positioning-38da843b-2e20-438f-ba40-3852f2efd8b3.json

@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "react-positioning: Move to new common folder.",
+  "packageName": "@fluentui/react-positioning",
+  "email": "[email protected]",
+  "dependentChangeType": "none"
+}

change/@fluentui-react-theme-f4877a3e-459b-4be9-9ec6-f54a5a861ee7.json

@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "react-theme: Move to new common folder.",
+  "packageName": "@fluentui/react-theme",
+  "email": "[email protected]",
+  "dependentChangeType": "none"
+}

change/@fluentui-react-utilities-183ec8ef-2418-49c4-9468-d326191bddb9.json

@@ -0,0 +1,7 @@
+{
+  "type": "none",
+  "comment": "react-utilities: Move to new common folder.",
+  "packageName": "@fluentui/react-utilities",
+  "email": "[email protected]",
+  "dependentChangeType": "none"
+}