cleanup
IDEA-101453 Mercurial: display reasonable notification on successful repository init bug fixed

*Currently internal IDs are displayed if init was successful: forget using HgVcsMessages.
modified symbol for darcula (IDEA-99497, IDEA-96808)
EA-43890, EA-43105 - AIOOBE: PersistentHashMapValueStorage.compactValues +review CR-IC
diagnostics for EA-43727 - assert: ArgumentInstruction.findCall
EA-43279 Groovy: Create method in interface from usage