TrigEDMConfig: Add more EDM entry checks for testEDMRun3, use on extended EDM list (ATR-26391)

Adding further checks of Run 3 trigger EDM and performing EDM check in more places.

New function testEDMList() created in TriggerEDM.py to use in

1. testEDM‎Run3.py‎ unit test (replaces previous checks that ran here).
2. on user-extended EDM list during configuration, extended via flags.Trigger.ExtraEDMList input via _addExtraCollectionsToEDMList.
3. testEDM‎.py‎ unit test on dummy EDM + extended dummy EDM via _addExtraCollectionsToEDMList call.

The additional checks added here are:

• EDM entry has at least 3 entries (also to avoid invalid index access in the script).
• entry name contains exactly one '#'.
• no '.' if entry name contains no 'Aux'
• an entry starting with xAOD and not containing 'Aux' is followed by an entry that pattern matches this.
• matching interface-aux entries also share same targets.
• if 'AOD' contained in target list, 'ESD' contained in target list also.
• if 'SLIM' contained in target list, 'AODFULL' contained in target list also.
• no duplicate entries after stripping all characters after a '.' (stripping container variables).

And following previous checks are kept:

• container type name can be entered in the CLID database.
• if 'Aux' in name, 'Aux.' in name too.
• 'Aux' always follows 'non-Aux' entry
• target is defined in AllowedOutputFormats
• allowTruncation-labelled entries are at the end of list.
• All entries of EDMDetailsRun3 appear in the list (errors for this check can be suppressed).

Adjustments for EDM entry format compliance

• ESD target added to HLTNav_Summary_AODSlimmed entries.
• EDIT for the record: (non-online collections) HLTNav_Summary_AODSlimmed and HLTNav_Summary_ESDSlimmed removed from TriggerEDMRun3 entirely, as should be redundant (offline code already writes them to file), and otherwise failed new EDM checks.
• _addExtraCollectionsToEDMList now adds new collections to start of list so that "allowTruncation" items remain at end of list/serialised last.