Run IDE with Project Manager endpoint instead of Language Server endpoints, when on local backend (#6810)

This is a fix for a couple of recent regressions:
- Fixes #6756: Projects couldn't be renamed anymore from within the project view.
- Fixes #6804: One could no longer switch between projects from within the project view.
- It also unblocks the issue with the spinner (that got reverted), but that probably needs some extra attention.

It might be the long-term goal to have different UX solutions to these cases, but this should fix those regressions in the short term at least.

Thanks to @somebody1234 for the in-depth conversation (and the actual code!).

app/ide-desktop/lib/dashboard/src/authentication/src/dashboard/components/dashboard.tsx

@@ -299,6 +299,7 @@ function Dashboard(props: DashboardProps) {
 
     const switchToDashboardTab = react.useCallback(() => {
         setTab(Tab.dashboard)
+        doRefresh()
         const ideElement = document.getElementById(IDE_ELEMENT_ID)
         if (ideElement) {
             ideElement.style.top = '-100vh'

app/ide-desktop/lib/dashboard/src/authentication/src/dashboard/components/ide.tsx

@@ -4,6 +4,8 @@ import * as react from 'react'
 import * as backendModule from '../backend'
 import * as backendProvider from '../../providers/backend'
 
+import GLOBAL_CONFIG from '../../../../../../../../gui/config.yaml' assert { type: 'yaml' }
+
 // =================
 // === Constants ===
 // =================
@@ -67,6 +69,15 @@ function Ide(props: IdeProps) {
                     }
                 })()
                 const runNewProject = async () => {
+                    const engineConfig =
+                        backend.type === backendModule.BackendType.remote
+                            ? {
+                                  rpcUrl: jsonAddress,
+                                  dataUrl: binaryAddress,
+                              }
+                            : {
+                                  projectManagerUrl: GLOBAL_CONFIG.projectManagerEndpoint,
+                              }
                     await appRunner.runApp({
                         loader: {
                             assetsUrl: `${assetsRoot}dynamic-assets`,
@@ -74,8 +85,7 @@ function Ide(props: IdeProps) {
                             jsUrl: `${assetsRoot}pkg${JS_EXTENSION[backend.type]}`,
                         },
                         engine: {
-                            rpcUrl: jsonAddress,
-                            dataUrl: binaryAddress,
+                            ...engineConfig,
                             preferredVersion: engineVersion,
                         },
                         startup: {