fix: Rename Turbo Stream helpers to avoid clashes in user apps (#3462)

[dark-panda]

Description

Fixes #3462

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas - simple renaming, shouldn't require new comments
• I have made corresponding changes to the documentation - doesn't seem to be any documentation referencing these methods
• I have added tests that prove my fix is effective or that my feature works

Screenshots & recording

Manual review steps

1. Step 1
2. Step 2

Manual reviewer: please leave a comment with output from the test if that's the case.

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[adrianthedev]

This needs coordination from us to make sure that the private repositories also comply to the new API.
I'll leave @Paul-Bob to take it over.