test: Fix feature_pruning.py (#5353)

## Issue being fixed or feature implemented
`feature_pruning.py` is failing atm

## What was done?
pls see individual commits

## How Has This Been Tested?
run `feature_pruning.py` locally

gitian for this branch with `INTEGRATION_TESTS_ARGS` set to `--extended
--exclude feature_dbcrash --timeoutscale=4 --jobs=4`:
https://gitlab.com/dashpay/dash/-/pipelines/852044104
NOTE:
[`linux64_tsan-test`](https://gitlab.com/dashpay/dash/-/jobs/4197383660)
failed because tsan build binaries are super slow and we hit 30 minutes
timeout for 1 single test because of that. This is not an actual test
failure.

## Breaking Changes
n/a

## Checklist:
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [ ] I have added or updated relevant unit/integration/functional/e2e
tests
- [ ] I have made corresponding changes to the documentation
- [x] I have assigned this pull request to a milestone _(for repository
code-owners and collaborators only)_

test/functional/feature_pruning.py

@@ -121,9 +121,10 @@ class PruneTest(BitcoinTestFramework):
         self.sync_blocks(self.nodes[0:5])
 
     def test_invalid_command_line_options(self):
+        self.stop_node(0)
         self.nodes[0].assert_start_raises_init_error(
             expected_msg='Error: Prune cannot be configured with a negative value.',
-            extra_args=['-prune=-1'],
+            extra_args=['-prune=-1', '-txindex=0', '-disablegovernance'],
         )
         self.nodes[0].assert_start_raises_init_error(
             expected_msg='Error: Prune configured below the minimum of 550 MiB.  Please use a higher number.',
@@ -133,9 +134,17 @@ class PruneTest(BitcoinTestFramework):
             expected_msg='Error: Prune mode is incompatible with -txindex.',
             extra_args=['-prune=550', '-txindex'],
         )
+        # self.nodes[0].assert_start_raises_init_error(
+        #     expected_msg='Error: Prune mode is incompatible with -coinstatsindex.',
+        #     extra_args=['-prune=550', '-coinstatsindex'],
+        # )
         self.nodes[0].assert_start_raises_init_error(
-            expected_msg='Error: Prune mode is incompatible with -coinstatsindex.',
+            expected_msg='Error: Prune mode is incompatible with -blockfilterindex.',
-            extra_args=['-prune=550', '-coinstatsindex'],
+            extra_args=['-prune=550', '-blockfilterindex'],
+        )
+        self.nodes[0].assert_start_raises_init_error(
+            expected_msg='Error: Prune mode is incompatible with -disablegovernance=false.',
+            extra_args=['-prune=550', '-disablegovernance=false'],
         )
 
     def test_height_min(self):
@@ -474,14 +483,15 @@ class PruneTest(BitcoinTestFramework):
             self.log.info("Test wallet re-scan")
             self.wallet_test()
 
+        self.log.info("Test invalid pruning command line options")
+        self.test_invalid_command_line_options()
+
+        # NOTE: this is a Dash-specific part, it should be the very last one before "Done"
         self.log.info("Stopping pruned nodes manually")
         for i in range(2, 6):
             self.log.info("Stopping pruned node%d" % i)
             self.stop_node(i, expected_stderr=EXPECTED_STDERR_NO_GOV_PRUNE)
 
-        self.log.info("Test invalid pruning command line options")
-        self.test_invalid_command_line_options()
-
         self.log.info("Done")
 
 if __name__ == '__main__':