fix: use coinstatsindex instead blockfilterindex in feature_prunning

[knst]

Issue being fixed or feature implemented

This is follow-up changes for backports bitcoin#15946 and bitcoin#19521

It fixes failure:

TestFramework (INFO): Test invalid pruning command line options
TestFramework (ERROR): Assertion failed
Traceback (most recent call last):
  File "dashtest/functional/test_framework/test_node.py", line 511, in assert_start_raises_init_error
    ret = self.process.wait(timeout=self.rpc_timeout)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/subprocess.py", line 1264, in wait
    return self._wait(timeout=timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/subprocess.py", line 2038, in _wait
    raise TimeoutExpired(self.args, timeout)
subprocess.TimeoutExpired: Command '['dashsrc/dashd', '-datadir=/tmp/dash_func_test_m8w6q7a2/node0', '-logtimemicros', '-debug', '-debugexclude=libevent', '-debugexclude=leveldb', '-mocktime=1417713337', '-uacomment=testnode0', '-logthreadnames', '-logsourcelocations', '-createwalletbackups=0', '-prune=550', '-blockfilterindex', '-mocktime=1417713337']' timed out after 120 seconds

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "dashtest/functional/test_framework/test_framework.py", line 159, in main
    self.run_test()
  File "dashtest/functional/feature_pruning.py", line 495, in run_test
    self.test_invalid_command_line_options()
  File "dashtest/functional/feature_pruning.py", line 149, in test_invalid_command_line_options
    self.nodes[0].assert_start_raises_init_error(
  File "dashtest/functional/test_framework/test_node.py", line 541, in assert_start_raises_init_error
    self._raise_assertion_error(assert_msg)
  File "dashtest/functional/test_framework/test_node.py", line 180, in _raise_assertion_error
    raise AssertionError(self._node_msg(msg))
AssertionError: [node 0] dashd should have exited within 120s with expected error Error: Prune mode is incompatible with -blockfilterindex.
TestFramework (INFO): Stopping nodes

What was done?

Removed blockfilterindex test, enabled coinstatsindex test.

How Has This Been Tested?

Run manually: test/functional/feature_pruning.py
This test is not run by our CI

Breaking Changes

N/A

Checklist:

• I have performed a self-review of my own code
• 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
• I have assigned this pull request to a milestone

[PastaPastaPasta]

utACK 40c0e06

[UdjinM6]

ACK 40c0e06