fix(Scripts/VioletHold): Fix Ethereal Sphere speed in Xevozz encounter

[blinkysc]

Changes Proposed:

This PR proposes changes to:

• Core (units, players, creatures, game systems).
• Scripts (bosses, spell scripts, creature scripts).
• Database (SAI, creatures, etc).

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Issues Addressed:

• Closes [Violet Hold] Xevozz issues with orbs #25242

SOURCE:

The changes have been validated through:

• Live research (checked on live servers, e.g Classic WotLK, Retail, etc.)
• Sniffs (remember to share them with the open source community!)
• Video evidence, knowledge databases or other public sources (e.g forums, Wowhead, etc.)
• The changes promoted by this pull request come partially or entirely from another project (cherry-pick).

Description

After #25085 (fix(Core/Movement): followers match their target's motion speed), MoveFollow defaults to inheritSpeed=true. This causes creature-to-creature follows to inherit the target's speed. The Ethereal Spheres summoned by Xevozz now inherit his run speed (1.71429) instead of using their own slow speed_run from creature_template (0.42857), making them ~4x faster than intended and impossible to kite.

The fix passes inheritSpeed=false to MoveFollow so spheres use their own creature_template speed.

Tests Performed:

This PR has been:

• Tested in-game by the author.
• Tested in-game by other community members/someone else other than the author/has been live on production servers.
• This pull request requires further testing and may have edge cases to be tested.

How to Test the Changes:

• This pull request can be tested by following the reproduction steps provided in the linked issue
• This pull request requires further testing. Provide steps to test your changes. If it requires any specific setup e.g multiple players please specify it as well.

1. .tele violet hold
2. Start the instance and get Xevozz as a boss (or force via script edit)
3. Engage Xevozz, wait ~10s for Ethereal Sphere summon
4. Kite Xevozz away — spheres should move much slower than player run speed
5. Test on heroic — two spheres should spawn, both slow

Known Issues and TODO List:

• Other encounters using MoveFollow for deliberately slow creatures may need the same inheritSpeed=false fix after fix(Core/Movement): followers match their target's motion speed #25085

[TheSCREWEDSoftware]

Unsure if this may or not require a sniff to validate the c.t has the correct values (even if script has it fixed)