e2e: test on iOS 15 (#559)

## 📜 Description

Run e2e tests on iOS 15 too.

## 💡 Motivation and Context

Initially I thought that it would be an overkill, but recently I fixed a
bug and introduced a regression to iOS 15.

I want to catch such regressions as soon as possible, so in this PR I'm
adding a job that will run e2e tests on iOS 15.

## 📢 Changelog

### E2E

- add iOS 15 config;

### CI

- run tests on iOS 15;

## 🤔 How Has This Been Tested?

Tested on CI 😊 

## 📝 Checklist

- [x] CI successfully passed
- [x] I added new mocks and corresponding unit-tests if library API was
changed

Author: kirillzyusko

.github/workflows/ios-e2e-test.yml

@@ -87,7 +87,7 @@ jobs:
           path: example/ios/build/Build/Products/Release-iphonesimulator/KeyboardControllerExample.app/**
   e2e-test:
     name: ⚙️ Automated test cases (iOS-${{ matrix.devices.ios }})
-    runs-on: macos-14
+    runs-on: macos-${{ matrix.devices.macos }}
     timeout-minutes: 60
     env:
       WORKING_DIRECTORY: example
@@ -98,9 +98,10 @@ jobs:
       matrix:
         devices:
           [
-            { ios: 16, xcode: "14.3.1" },
-            { ios: 17, xcode: "15.4" },
-            { ios: 18, xcode: "16-beta" },
+            { ios: 15, xcode: "13.4.1", macos: 12 },
+            { ios: 16, xcode: "14.3.1", macos: 14 },
+            { ios: 17, xcode: "15.4", macos: 14 },
+            { ios: 18, xcode: "16-beta", macos: 14 },
           ]
     needs: build
     steps:

e2e/.detoxrc.js

@@ -41,6 +41,13 @@ module.exports = {
     },
   },
   devices: {
+    simulator15: {
+      type: "ios.simulator",
+      device: {
+        type: "iPhone 13 Pro",
+        os: "iOS 15.5",
+      },
+    },
     simulator16: {
       type: "ios.simulator",
       device: {
@@ -86,6 +93,14 @@ module.exports = {
     },
   },
   configurations: {
+    "example.ios.sim-15.debug": {
+      device: "simulator15",
+      app: "example.ios.debug",
+    },
+    "example.ios.sim-15.release": {
+      device: "simulator15",
+      app: "example.ios.release",
+    },
     "example.ios.sim-16.debug": {
       device: "simulator16",
       app: "example.ios.debug",