Repeated use of IDE hook hits the cache when it shouldn't

[micah-press]

If you are submitting a bug, please include the following:

• summary of problem

When formatting an individual file using Spotless's IDE hook, repeatedly invoking spotlessApply fails to apply fixes to the file after the first run if the changes are undone in between runs. I can reproduce this using the Intellij plugin and directly on the command line. I've linked a repo below containing a reproduction of the issue.

Current behavior:

If I run spotlessApply -PspotlessIdeHook=/path/to/my/file more than once, undoing the formatting changes after the first invocation, subsequent invocations won't apply changes to the file.

Expected behavior:

Spotless should be consistent and idempotent, so I should be able to run it as many times as I want and get the same output each time.

---

• Gradle or Maven version
  Gradle 8.11.1
• spotless version
  7.0.0.BETA4
• operating system and version
  Linux 5.15.0-126-generic amd64
• copy-paste your full Spotless configuration block(s), and a link to a public git repo that reproduces the problem if possible
  https://github.com/micah-press/mp-spotless-bug-demo

spotless {
    java {
        endWithNewline()
    }
}

• copy-paste the full content of any console errors emitted by gradlew spotless[Apply/Check] --stacktrace
  N/A