[proposed API][builtins] Theia misses proposed API: ProfileContentHandler

[marcdumais-work]

Bug Description:

Testing locally-built vscode built-in extensions 1.77.0, I have encountered an issue with the activation of vscode.configuration-editing.

Key part of the exception:

2023-05-11T18:18:57.424Z root ERROR [hosted-plugin: 2790517] Activating extension 'Configuration Editing (built-in)' failed: TypeError: d.window.registerProfileContentHandler is not a function

It looks like it's using new proposed API: ProfileContentHandler

Full exception:

2023-05-11T18:18:57.412Z root INFO [hosted-plugin: 2790517] PLUGIN_HOST(2790517): PluginManagerExtImpl/loadPlugin(/tmp/vscode-unpacked/configuration-editing-1.77.0.vsix/extension/dist/configurationEditingMain)
2023-05-11T18:18:57.424Z root ERROR [hosted-plugin: 2790517] Activating extension 'Configuration Editing (built-in)' failed: TypeError: d.window.registerProfileContentHandler is not a function
    at 210 (/tmp/vscode-unpacked/configuration-editing-1.77.0.vsix/extension/dist/configurationEditingMain.js:2:408472)
    at a (/tmp/vscode-unpacked/configuration-editing-1.77.0.vsix/extension/dist/configurationEditingMain.js:2:419167)
    at /tmp/vscode-unpacked/configuration-editing-1.77.0.vsix/extension/dist/configurationEditingMain.js:2:422258
    at /tmp/vscode-unpacked/configuration-editing-1.77.0.vsix/extension/dist/configurationEditingMain.js:2:424869
    at Object.<anonymous> (/tmp/vscode-unpacked/configuration-editing-1.77.0.vsix/extension/dist/configurationEditingMain.js:2:424975)
    at Module._compile (node:internal/modules/cjs/loader:1174:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1229:10)
    at Module.load (node:internal/modules/cjs/loader:1044:32)
    at Module._load (node:internal/modules/cjs/loader:885:12)
    at f._load (node:electron/js2c/asar_bundle:2:13330)

Steps to Reproduce:

configuration-editing-1.77.0.zip

Additional Information

• Operating System:
• Theia Version: