[Telink] Fixed hanging on BLE Shutdown (TC-SC-4.1) (#30152)

* [Telink] Fixed hanging on BLE Shutdown (TC-SC-4.1)

Refactored BLE shutdown condition to pass test TC-SC-4.1.
Device would become stuck at scheduler routines after open-basic-commissioning-window time expires.

Signed-off-by: Dmytro Huz  <dmytro.huz@telink-semi.com>

* Restyled by clang-format

---------

Signed-off-by: Dmytro Huz  <dmytro.huz@telink-semi.com>
Co-authored-by: Restyled.io <commits@restyled.io>

src/platform/telink/BLEManagerImpl.cpp

@@ -180,8 +180,11 @@ CHIP_ERROR BLEManagerImpl::_Init(void)
 
 void BLEManagerImpl::_Shutdown()
 {
-    bt_disable();
-    mBLERadioInitialized = false;
+    if (mBLERadioInitialized)
+    {
+        bt_disable();
+        mBLERadioInitialized = false;
+    }
 }
 
 void BLEManagerImpl::DriveBLEState(intptr_t arg)