GenerateAppleSymbolsFile fails with permission error

I'm running a build with `+output_groups=dsym` and in some conditions in CI, the build fails with the following error:

`Failed to write bazel-out/applebin_ios-ios_arm64-opt-ST-55c05c3eeee9/bin/XXXXXXXXXXXX.framework-intermediates/symbols_output/0D911365-E3B1-37ED-AFC6-D4FBB0160CB1.symbols: You don’t have permission to save the file “0D911365-E3B1-37ED-AFC6-D4FBB0160CB1.symbols” in the folder “symbols_output”.`

When looking at the directory, it is indeed read-only but I'm failing to understand why `actions.declare_directory` from https://github.com/bazelbuild/rules_apple/blob/96fa885dd8310ddc65289e590f31d1f3b25f46d9/apple/internal/intermediates.bzl#L43 fails to give the rule a directory that can be written to.

This happens when running the same build multiple times, I'll try to find a sure way to reproduce it, but would be happy to get any insight in the meantime if you have any.

Start at apple/internal/intermediates.bzl around line 43, where actions.declare_directory is used, and reproduce the repeated CI build with +output_groups=dsym. Inspect the permissions of symbols_output and the generated .symbols path across repeated builds. Done means identifying why the declared directory becomes read-only and ensuring GenerateAppleSymbolsFile can write its output.

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