Disable the automodel button if there are no methods that can be modeled

[robertbrignull]

Builds upon #3376

If there are no methods that can be modeled with AI, then disable the button. This hopefully avoids the situation where the user clicks the button but it appears to do nothing.

Luckily we can quite easily reuse the getCandidates method so we avoid having two implementations on whether there are methods that can be modeled.

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[robertbrignull]

I'm getting lots of errors around types when compiling the view and I wonder if this import is causing it. Presumably because we're importing code meant for NodeJS in a browser environment. The auto-model.ts file does import a bunch of other stuff too, even though getCandidates itself it pretty innocent.

../codeql-cli/cli.ts:10:8 - error TS1259: Module '"/Users/robertbrignull/github/vscode-codeql/extensions/ql-vscode/node_modules/tree-kill/index"' can only be default-imported using the 'allowSyntheticDefaultImports' flag

10 import tk from "tree-kill";
          ~~

  ../../node_modules/tree-kill/index.d.ts:13:1
    13 export = treeKill;
       ~~~~~~~~~~~~~~~~~~
    This module is declared with 'export =', and can only be used with a default import when using the 'allowSyntheticDefaultImports' flag.

../databases/local-databases/database-manager.ts:2:8 - error TS1192: Module '"vscode"' has no default export.

2 import vscode from "vscode";
         ~~~~~~

../databases/local-databases/database-manager.ts:73:31 - error TS7006: Parameter 'e' implicitly has an 'any' type.

73     const disposable = event((e) => {
                                 ~

../databases/local-databases/database-manager.ts:507:65 - error TS7006: Parameter 'folder' implicitly has an 'any' type.

507     return (vscode.workspace.workspaceFolders || []).findIndex((folder) =>
                                                                    ~~~~~~

../databases/local-databases/database-manager.ts:576:8 - error TS7006: Parameter 'folder' implicitly has an 'any' type.

576       (folder) => item.belongsToSourceArchiveExplorerUri(folder.uri),
           ~~~~~~

../local-queries/results-view.ts:198:55 - error TS7031: Binding element 'kind' implicitly has an 'any' type.

198       this.databaseManager.onDidChangeDatabaseItem(({ kind }) => {
                                                          ~~~~

../packaging/qlpack-file-loader.ts:6:34 - error TS2732: Cannot find module './qlpack-file.schema.json'. Consider using '--resolveJsonModule' to import module with '.json' extension.

6 import qlpackFileSchemaJson from "./qlpack-file.schema.json";
                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~


Found 7 errors in 4 files.

Errors  Files
     1  ../codeql-cli/cli.ts:10
     4  ../databases/local-databases/database-manager.ts:2
     1  ../local-queries/results-view.ts:198
     1  ../packaging/qlpack-file-loader.ts:6

[koesie10]

LGTM