vtkext: Fix a small issue with CollapseFullPath usage in hdri-file an… #7617

Job	Run time
Update LFS data cache	1m 9s
external-build	1m 45s
android (armeabi-v7a)	1m 44s
android (arm64-v8a)	1m 49s
android (x86)	1m 46s
android (x86_64)	2m 2s
macos_arm (commit, no-bundle, no-static)	1s
macos_arm (v9.4.1, no-bundle, no-static)	1s
windows (commit, no-static)	14m 31s
macos_arm (v9.3.1, no-bundle, no-static)	1s
windows (v9.4.1, no-static)	15m 2s
macos (commit)	1s
linux (commit, standard)	9m 40s
windows (v9.3.1, no-static)	10m 54s
macos (v9.4.1)	1s
linux (v9.4.1, standard)	8m 52s
windows (v9.2.6, no-static)	10m 35s
macos_arm (commit, bundle, no-static)	1s
macos (v9.3.1)	1s
linux (v9.3.1, standard)	6m 15s
windows (commit, static)	14m 6s
macos_arm (commit, no-bundle, static)	1s
linux (v9.2.6, standard)	5m 28s
macos (v9.2.6)	1s
linux (egl, commit, raytracing, optional-deps, no-exclude-deprecated, egl, no-static)	8m 52s
linux (osmesa, commit, raytracing, optional-deps, no-exclude-deprecated, osmesa, no-static)	8m 26s
coverage	9m 8s
python-packaging (ubuntu-latest)	3m 9s
sanitizer (address)	11m 40s
linux (exclude_deprecated, commit, raytracing, optional-deps, exclude-deprecated, auto, no-static)	9m 46s
python-packaging (windows-latest)	6m 1s
linux (no_optional_deps, commit, no-raytracing, no-optional-deps, no-exclude-deprecated, auto, no...	5m 26s
sanitizer (thread)	12m 54s
python-packaging (macos-13)	1s
linux (static_libs, commit, no-raytracing, optional-deps, no-exclude-deprecated, auto, static)	7m 57s
static-analysis	6m 10s
sanitizer (undefined)	8m 54s
	3h 24m 11s

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