[SYCL][LIT E2E] Handle RUN_LAUNCHER in BE_RUN_PLACEHOLDER (#9184)

Author: aelovikov-intel

sycl/test-e2e/lit.cfg.py

@@ -246,7 +246,10 @@
 config.substitutions.append( ('%sycl_be', config.sycl_be) )
 # Use short names for LIT rules
 config.available_features.add(config.sycl_be.replace('ext_intel_', '').replace('ext_oneapi_', ''))
-config.substitutions.append( ('%BE_RUN_PLACEHOLDER', "env ONEAPI_DEVICE_SELECTOR='{SYCL_PLUGIN}:* '".format(SYCL_PLUGIN=config.sycl_be)) )
+be_run_substitute = "env ONEAPI_DEVICE_SELECTOR='{SYCL_PLUGIN}:* '".format(SYCL_PLUGIN=config.sycl_be)
+if config.run_launcher:
+    be_run_substitute += " {}".format(config.run_launcher)
+config.substitutions.append( ('%BE_RUN_PLACEHOLDER', be_run_substitute) )
 
 if config.dump_ir_supported:
    config.available_features.add('dump_ir')