fix(javascript): preserve import-equals declaration and export evidence (#2062)

* fix(javascript): retain TypeScript import-equals dependencies

* test(mcp): align completion checks with warm provider state

* fix(javascript): propagate require origins through exported aliases

* fix(javascript): normalize equivalent CTS binding origins

---------

Co-authored-by: hhang <169027046+xu91102@users.noreply.github.com>

src/domain/javascript/javascriptSemanticAnalysis.structure.test.ts

@@ -38,10 +38,12 @@ describe("JavaScript semantic analysis: structure 1", () => {
     expect(origin(topLevelBinding(ir, "bus"))).toEqual({
       specifier: "electron",
       importedPath: ["ipcMain"],
+      resolutionMode: "require",
     });
     expect(origin(topLevelBinding(ir, "forwarded"))).toEqual({
       specifier: "electron",
       importedPath: ["ipcMain"],
+      resolutionMode: "require",
     });
     expect(topLevelBinding(ir, "assigned").provenance).toMatchObject({
       status: "ambiguous",
@@ -66,6 +68,7 @@ describe("JavaScript semantic analysis: structure 1", () => {
     expect(origin(innerBus)).toEqual({
       specifier: "./local-bus.js",
       importedPath: [],
+      resolutionMode: "require",
     });
     const shadow = onlyBinding(ir, "ipcRenderer");
     expect(shadow.provenance).toEqual({