Fix incorrect unification of regex warnings

[DL6ER]

What does this implement/fix?

Current development-v6 singles out regex warnings by the warning itself rather than the regex itself. This leads to the defect that multiple warnings get incorrectly summarized together when they are affected by the same warning.

How to reproduce:

Add domains via the sqlite3 CLI to the gravity.db database, e.g.

INSERT INTO domainlist (type,domain) VALUES (3,'[[[');
INSERT INTO domainlist (type,domain) VALUES (3,'[[[[');
INSERT INTO domainlist (type,domain) VALUES (3,'[[[[[');
INSERT INTO domainlist (type,domain) VALUES (3,'[[[[[[');

On development-v6: Only one entry is created in the diagnosis system
On this branch: All warnings are shown, e.g.,

We don't need to update anything in any other repo as FTL is now the only responsible player in generating messages.

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Related issue or feature (if applicable): N/A

Pull request in docs with documentation (if applicable): N/A

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[DL6ER]

The last commit fixes another issue which could have happened when multiple warnings are triggered for database table adjacent entries were issued - cfm. the last three warnings in the screenshot above had the same ID shown.

[yubiuser]