ui: rename the Phone simulator tab to Simulator and the eSIM pill to eSIM LPA (v3.5.12)

- Top-level tab label "Phone simulator" -> "Simulator" (RU "Симулятор");
  the DOM ids stay tab-phone / phone-sub-*.
- The eSIM pill inside the Simulator tab is now "eSIM LPA" (EN/RU),
  matching the section's ES10/LPA scope; the panel id stays phone-sub-esim.
- Documentation updated: help EN/RU (section 8 Simulator, list of the four
  pills including Test script, tab lists and cross-references),
  README/README_RUS (tab lists, Simulator section, eSIM LPA), AGENTS
  repo/root.
- Test titles updated; version 3.5.12; sw cache simple-v265.

579 frontend / 467 Python green.

frontend/tests/testscripts.test.js

@@ -117,7 +117,7 @@ test('testCommandOptions covers the proactive names and keeps custom values', ()
 	assert.ok(custom.some(o => o.v === '0x74'));
 });
 
-test('the Phone simulator hosts the Test script pill and its wiring', () => {
+test('the Simulator hosts the Test script pill and its wiring', () => {
 	assert.match(html, /data-phone-sub="test"[^>]*data-l10n="Test script"/);
 	assert.match(html, /id="phone-sub-test"/);
 	assert.match(html, /\['phone', 'tr', 'esim', 'test'\]/);