Support script-less debugging sessions (and more)

[JakeShirley]

Support debugger connections without active script packs

Summary

This PR updates the Minecraft Debugger to gracefully handle connecting to a Minecraft instance that has no active script packs, adds TypeScript file support to the debugger languages list, and applies formatting fixes.

Changes

Bug Fixes

• Support connections with no active script packs — Previously, the debugger would terminate with an error ("No Minecraft Add-Ons found") when connecting to a target with no scripting behavior packs. Now it shows a warning notification and continues in a diagnostics-only mode, allowing users to still use diagnostic features without scripts loaded. The passcode prompt is also moved earlier in the flow so it's requested before checking for plugins.
  • NOTE: This can behave a little odd without new Minecraft client changes, but it's not significant to warrant bumping the protocol version IMO.
• Skip source file path checks when no target module is set — checkSourceFilePaths() is now only called when _targetModuleUuid is defined, avoiding misleading source map warnings in diagnostics-only mode.
• Add TypeScript to supported debugger languages — The languages list in the debugger contribution now includes "typescript" alongside "javascript", enabling breakpoints and debug features in .ts files.

Code Quality

• Format session.ts — Applied consistent trailing comma formatting throughout the file to match project prettier configuration.

Files Changed

File	Description
package.json	Added "typescript" to debugger supported languages
src/session.ts	Diagnostics-only mode for no-script connections; formatting cleanup

Testing

• Verify the debugger can connect to a Minecraft instance with no script packs and shows the diagnostics-only warning.
• Verify breakpoints and debugging still work in .ts files.
• Verify existing debugger attach workflow with script packs is unaffected.