spotless:off and spotless:on fails to prevent changes to imports (v2)

Reproduce the Maven configuration with java ImportSorter and toggleOffOn using the spotless:off/on example. Start by reading ImportOrderStep and the toggleOut handling in PipeStepPair, then check the existing tests for these steps. Done means the trailing import comment remains intact and the toggle markers no longer trigger the reported exception.

This can be seen as a reboot of https://github.com/diffplug/spotless/issues/558 and https://github.com/diffplug/spotless/issues/996.

I want Java ImportSorter not to remove the trailing comment from:

import java.util.TreeSet; // NOPMD false positive, see https://github.com/pmd/pmd/issues/4816
```.

To do so, I wrote:

com.diffplug.spotless spotless-maven-plugin 2.43.0 [...] ``` and

// spotless:off
import java.util.TreeSet; // NOPMD false positive, see https://github.com/pmd/pmd/issues/4816
// spotless:on

It led to the exception:

[INFO] --- spotless-maven-plugin:2.43.0:apply (default-cli) @ sp-core ---
[INFO] Index file corresponds to a different configuration of the plugin. Either the plugin version or its configuration has changed. Fallback to an empty index
[ERROR] Step 'toggleOut' found problem in 'src/main/java/.../XXX.java':
An intermediate step removed a match of spotless:off spotless:on
java.lang.Error: An intermediate step removed a match of spotless:off spotless:on
    at com.diffplug.spotless.generic.PipeStepPair.stateOutCompute (PipeStepPair.java:207)
    at com.diffplug.spotless.generic.PipeStepPair$StateOut.format (PipeStepPair.java:176)
    at com.diffplug.spotless.generic.PipeStepPair.lambda$new$2 (PipeStepPair.java:97)
    at com.diffplug.spotless.FormatterFunc.apply (FormatterFunc.java:32)
    at com.diffplug.spotless.FormatterStepImpl$Standard.format (FormatterStepImpl.java:82)
    at com.diffplug.spotless.FormatterStep$Strict.format (FormatterStep.java:103)
    at com.diffplug.spotless.Formatter.compute (Formatter.java:246)
    at com.diffplug.spotless.PaddedCell.calculateDirtyState (PaddedCell.java:203)
    at com.diffplug.spotless.PaddedCell.calculateDirtyState (PaddedCell.java:190)
    at com.diffplug.spotless.maven.SpotlessApplyMojo.process (SpotlessApplyMojo.java:63)
    at com.diffplug.spotless.maven.AbstractSpotlessMojo.execute (AbstractSpotlessMojo.java:237)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    [...]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  5.807 s
[INFO] Finished at: 2024-02-15T14:21:17+04:00
[INFO] ------------------------------------------------------------------------
---------------------------------------------------
[...]
---------------------------------------------------
Exception in thread "main" java.lang.Error: An intermediate step removed a match of spotless:off spotless:on
	at com.diffplug.spotless.generic.PipeStepPair.stateOutCompute(PipeStepPair.java:207)
	at com.diffplug.spotless.generic.PipeStepPair$StateOut.format(PipeStepPair.java:176)
	at com.diffplug.spotless.generic.PipeStepPair.lambda$new$2(PipeStepPair.java:97)
	at com.diffplug.spotless.FormatterFunc.apply(FormatterFunc.java:32)
	at com.diffplug.spotless.FormatterStepImpl$Standard.format(FormatterStepImpl.java:82)
	at com.diffplug.spotless.FormatterStep$Strict.format(FormatterStep.java:103)
	at com.diffplug.spotless.Formatter.compute(Formatter.java:246)
	at com.diffplug.spotless.PaddedCell.calculateDirtyState(PaddedCell.java:203)
	at com.diffplug.spotless.PaddedCell.calculateDirtyState(PaddedCell.java:190)
	at com.diffplug.spotless.maven.SpotlessApplyMojo.process(SpotlessApplyMojo.java:63)
	at com.diffplug.spotless.maven.AbstractSpotlessMojo.execute(AbstractSpotlessMojo.java:237)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)

Is this a missing feature of ImportOrderStep? Or a bug around toggleOffOn?