Arm backend: Forward fix for VGF refactoring (#14152)

Summary:
Forward fix to

https://www.internalfb.com/diff/D82052739
#13862

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Reviewed By: SS-JIA, digantdesai, kimishpatel

Differential Revision: D82116025

Author: mergennachin

backends/arm/test/TARGETS

@@ -44,6 +44,7 @@ python_library(
         "//executorch/backends/arm:ethosu_partitioner",
         "//executorch/backends/arm/quantizer:lib",
         "//executorch/backends/arm/tosa:mapping",
+        "//executorch/backends/arm:vgf_partitioner",
         "//executorch/devtools/backend_debug:delegation_info",
         "//executorch/exir/backend:operator_support",
         "fbsource//third-party/pypi/tabulate:tabulate",