Expand native web and Runtime app compatibility

[lucamykael]

Summary

• expand native React page compilation with data views, form controls, galleries, images, combo boxes, dynamic bindings, actions, and association-aware operation inventories
• extend native Runtime model compilation for associations, Java proxies/actions, database connector lowering, navigation, XPath, and microflow semantics
• validate the changes against Sudoku, sandbox, external LearnNow/MyFirstModule, SLA Task, and LearnNow starter runtimes

Validation

• bundle exec rspec: 867 examples, 0 failures
• bundle exec rubocop: 217 files, 0 offenses
• git diff --check
• Chromium CRUD/navigation checks for Sudoku and external Training Events
• HTTP 200 on local runtimes 18080 through 18084

Scope

This PR is a substantial compatibility milestone, not a claim of universal Mendix project support. Remaining coverage includes additional page widgets/actions, arbitrary pluggable widgets, richer DataView sources/snippets, broader nanoflows, and more Mendix version families.