refactor: migrate to flutter_math_fork and markdown_widget for enhanced markdown capabilities

- Replaced flutter_markdown_plus with flutter_math_fork to improve mathematical rendering within markdown content.
- Integrated markdown_widget for better markdown processing and rendering, enhancing overall user experience.
- Updated the markdown configuration to utilize the new packages, ensuring maintainability and adaptability of markdown features.
- Refactored the streaming markdown widget to accommodate the new markdown processing logic, improving code clarity and performance.

ios/Podfile.lock

@@ -75,6 +75,9 @@ PODS:
     - Flutter
   - wakelock_plus (0.0.1):
     - Flutter
+  - webview_flutter_wkwebview (0.0.1):
+    - Flutter
+    - FlutterMacOS
 
 DEPENDENCIES:
   - file_picker (from `.symlinks/plugins/file_picker/ios`)
@@ -94,6 +97,7 @@ DEPENDENCIES:
   - stts (from `.symlinks/plugins/stts/ios`)
   - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)
   - wakelock_plus (from `.symlinks/plugins/wakelock_plus/ios`)
+  - webview_flutter_wkwebview (from `.symlinks/plugins/webview_flutter_wkwebview/darwin`)
 
 SPEC REPOS:
   trunk:
@@ -137,6 +141,8 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/url_launcher_ios/ios"
   wakelock_plus:
     :path: ".symlinks/plugins/wakelock_plus/ios"
+  webview_flutter_wkwebview:
+    :path: ".symlinks/plugins/webview_flutter_wkwebview/darwin"
 
 SPEC CHECKSUMS:
   DKImagePickerController: 946cec48c7873164274ecc4624d19e3da4c1ef3c
@@ -160,6 +166,7 @@ SPEC CHECKSUMS:
   SwiftyGif: 706c60cf65fa2bc5ee0313beece843c8eb8194d4
   url_launcher_ios: 694010445543906933d732453a59da0a173ae33d
   wakelock_plus: e29112ab3ef0b318e58cfa5c32326458be66b556
+  webview_flutter_wkwebview: 8ebf4fded22593026f7dbff1fbff31ea98573c8d
 
 PODFILE CHECKSUM: df88575cf61e98a1a3edf2f8c887dad2c18c2079