[zanieb]

The deleted-libpython mapping test uses LD_LIBRARY_PATH to load a temporary copy of the library. On glibc, an interpreter's DT_RPATH can take precedence and load a different copy, so the test fails because the temporary copy was not mapped. Preload the temporary library explicitly so the subprocess maps the file that the test removes. Create the copy beneath the working directory and preload it through a relative path, since LD_PRELOAD treats spaces and colons as separators.

Fixes #160388.

• Issue: test_remote_exec_deleted_libpython can fail when DT_RPATH selects libpython #160388