Feat: jetbrains plugin improvements

[raynaudoe]

• Fixed DAML LSP startup/restart behavior and disabled problematic semantic-token requests for DAML SDK 3.4.x.
• Fixed DAML workspace discovery and script-result resource handling.
• Fixed DAML import navigation, including navigation to specific imported symbols.
• Fixed and expanded DAML highlighting for keywords, built-ins, Prelude types, constructors like Some/None, script declarations, fields, parties, and operators.
• Fixed Script Results rendering to follow the IDE theme instead of defaulting to light mode.
• Fixed Script Results parsing for real DAML output, including contracts, disclosure, console traces, and nested transaction trees.
• Fixed the Tx Tree view so it is populated, readable, color-coded, and supports collapsible nested events.
• Fixed Console extraction so debug / Trace: output appears without polluting logs with the full transaction payload.
• Added regression tests and fixtures for highlighting, settings migration, script-result parsing, disclosure, malformed/hostile HTML, and webview behavior.