Regression: align sequences to profile by MUSCLE does not work

Issue is not reproducible on release 1.26.1

1. Open an alignment ../common_data/scenarios/_regression/4804/standard_amino.aln
2. From context menu select Align-> Align sequences to profile with MUSCLE
3. Select extended amino: ../common_data/scenarios/_regression/4804/ext_amino.fa
4. Push Open
Expected state:

The alignment has been modified, so that its alphabet has been switched from 'ext_amino.fa' " to 'standard_amino.aln'. Use "Undo", if you'd like to restore the original alignment.

Actual state:

'MUSCLE align 'ext_amino.fa' by profile 'standard_amino.aln'' task failed: Subtask

Unknown macro: {MUSCLE add to profile 'standard_amino.aln'}

is failed: Failed to apply the result of Muscle

Issue was detected by regression gui tests:
GUITest_regression_scenarios_test_4833_3
GUITest_regression_scenarios_test_4833_4
GUITest_regression_scenarios_test_4833_5

Affected XML tests:
uMuscle parallel plugin tests (12 tests)
uMuscle serial plugin tests (12 tests)