[rush] Rename the subspace pnpmfileSettings file to globalPnpmfileSettings.json to avoid overwriting the original pnpmfileSettings.json

[fzxen]

Summary

This MR rename subspace pnpmfileSettings file to globalPnpmfileSettings.json, because subspace pnpmfileSettings overrides original pnpmfileSettings and they have different data structures.

subspace pnpmfileSettings https://github.com/microsoft/rushstack/blob/e64a1e51976626f95250205cbb9d21b5fc805769/libraries/rush-lib/src/logic/pnpm/IPnpmfile.ts#L34-L39

original pnpmfileSettings https://github.com/microsoft/rushstack/blob/e64a1e51976626f95250205cbb9d21b5fc805769/libraries/rush-lib/src/logic/pnpm/IPnpmfile.ts#L13-L22

Due to the missing preferredVersion information in subspace pnpmfileSettings file, the preferredVersion does not take effect when the subspace is enabled.

Fixes #5118

Details

After debugging rush-lib, I found that pnpmfileSettings.json will be written twice.

First time: https://github.com/microsoft/rushstack/blob/438525caf08bcbdb75d33f6747cc34e050837d46/libraries/rush-lib/src/logic/pnpm/PnpmfileConfiguration.ts#L80-L83

Second time: https://github.com/microsoft/rushstack/blob/438525caf08bcbdb75d33f6747cc34e050837d46/libraries/rush-lib/src/logic/pnpm/SubspacePnpmfileConfiguration.ts#L50-L56

The second write operation will overwrite the first write content. And pnpmfileSettings.json is read once by global-pnpmfile.cjs and pnpmfile.cjs respectively.

Maybe we should distinguish the file names written twice, one is named pnpmfileSettings.json and the other named is globalPnpmfileSettings.json.

How it was tested

Impacted documentation

[fzxen]

@iclanton Could we publish a prerelease version? I want test it in my company repo.

[martinnaj]

@iclanton bump, this would also be very helpful for me