fix(desktop): update from the splash only after the user clicks (#3280)

fluxer_desktop/src/preload/splash.cjs

@@ -3,6 +3,7 @@
 const {ipcRenderer} = require('electron');
 
 const SPLASH_STATE_CHANNEL = 'desktop-splash:state';
+const SPLASH_REVEALED_CHANNEL = 'desktop-splash:revealed';
 const SPLASH_READY_CHANNEL = 'desktop-splash:ready';
 const SPLASH_RETRY_CHANNEL = 'desktop-splash:retry-now';
 const SPLASH_QUIT_CHANNEL = 'desktop-splash:quit';
@@ -87,7 +88,7 @@ let renderedLayout = null;
 let renderedManualSignature = null;
 let countdownTimer = null;
 let selectedOption = null;
-let splashStartedAt = Date.now();
+let splashStartedAt = Number.POSITIVE_INFINITY;
 let diagnosticsRevealTimer = null;
 let diagnosticsCopiedTimer = null;
 
@@ -592,12 +593,24 @@ function afterNextPaint(callback) {
 	});
 }
 
-window.addEventListener('DOMContentLoaded', () => {
+function restartDiagnosticsReveal() {
 	splashStartedAt = Date.now();
+	if (diagnosticsRevealTimer != null) clearTimeout(diagnosticsRevealTimer);
 	diagnosticsRevealTimer = setTimeout(() => {
 		diagnosticsRevealTimer = null;
 		render();
 	}, DIAGNOSTICS_REVEAL_MS);
+}
+
+ipcRenderer.on(SPLASH_REVEALED_CHANNEL, () => {
+	restartDiagnosticsReveal();
+	render();
+});
+
+window.addEventListener('DOMContentLoaded', () => {
+	if (!/(?:^|[?&])held=1(?:&|$)/.test(window.location?.search ?? '')) {
+		restartDiagnosticsReveal();
+	}
 	render();
 	const mount = document.getElementById(SPLASH_MOUNT_ID);
 	const branded = mount == null ? Promise.resolve() : waitForBranding(mount);