[lldb-dap][test] create temp source file in test directory. (llvm#163383)

Fixes llvm#163288

---------

Co-authored-by: Jonas Devlieghere <[email protected]>

Author: da-viper

lldb/test/API/tools/lldb-dap/stackTraceDisassemblyDisplay/TestDAP_stackTraceDisassemblyDisplay.py

@@ -29,7 +29,7 @@ def build_and_run_until_breakpoint(self):
         """
         Build the program and run until the breakpoint is hit, and return the stack frames.
         """
-        other_source_file = "other.c"
+        other_source_file = self.getBuildArtifact("other.c")
         with delete_file_on_exit(other_source_file):
             with open(other_source_file, "w") as f:
                 f.write(OTHER_C_SOURCE_CODE)
@@ -169,3 +169,4 @@ def test_stopDisassemblyDisplay(self):
         self.verify_frames_source(
             frames, main_frame_assembly=False, other_frame_assembly=False
         )
+        self.continue_to_exit()