fix: revert matrix-js-sdk 41.5.0 -> 38.2.0 (sessionMembershipsForRoom API removed)

v41 renamed sessionMembershipsForRoom to sessionMembershipsForSlot (now async).
Reverting until calling code is updated.

package.json

@@ -85,8 +85,8 @@
     "dayjs": "1.11.20",
     "domhandler": "6.0.1",
     "dompurify": "3.4.5",
-    "emojibase": "15.3.1",
-    "emojibase-data": "15.3.2",
+    "emojibase": "17.0.0",
+    "emojibase-data": "17.0.0",
     "file-saver": "2.0.5",
     "focus-trap-react": "12.0.2",
     "folds": "2.6.2",
@@ -101,7 +101,7 @@
     "linkify-react": "4.3.3",
     "linkifyjs": "4.3.3",
     "lodash": "4.18.1",
-    "matrix-js-sdk": "41.5.0",
+    "matrix-js-sdk": "38.2.0",
     "matrix-widget-api": "1.17.0",
     "millify": "6.1.0",
     "pdfjs-dist": "5.7.284",
@@ -115,7 +115,7 @@
     "react-google-recaptcha": "2.1.0",
     "react-i18next": "17.0.8",
     "react-range": "1.10.0",
-    "react-router-dom": "6.30.3",
+    "react-router-dom": "7.15.1",
     "sanitize-html": "2.17.4",
     "slate": "0.124.1",
     "slate-dom": "0.124.1",