fix: don't pre-select owned NAME dropdown entry for an unclaimed matching display name

[alejandro-jimenez-dcl]

The claimed-name dropdown pre-selected an entry whenever its text matched profile.Name, even when profile.HasClaimedName was false. TMP_Dropdown never fires onValueChanged when re-clicking the already-selected entry, so Save could never be enabled for a user whose non-unique display name matched a newly minted NAME — a silent, 100% reproducible equip block.

Only pre-select when the profile actually has a claimed name; otherwise start on the placeholder (-1) so the matching entry stays selectable.

Fixes #9550

Includes a regression test that fails without this fix.

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New build in progress, come back later!

[github-actions]

Warnings not reduced: 13940 => 13946 — remove at least 7 warnings to merge.

Warnings/errors in files changed by this PR (6)

Assets/DCL/UI/Profiles/Names/Tests/ProfileNameEditorControllerShould.cs:27  CSharpWarnings::CS8618  Non-nullable field 'controller' is uninitialized. Consider adding the 'required' modifier or declaring the field as nullable.
Assets/DCL/UI/Profiles/Names/Tests/ProfileNameEditorControllerShould.cs:28  CSharpWarnings::CS8618  Non-nullable field 'profile' is uninitialized. Consider adding the 'required' modifier or declaring the field as nullable.
Assets/DCL/UI/Profiles/Names/Tests/ProfileNameEditorControllerShould.cs:26  CSharpWarnings::CS8618  Non-nullable field 'view' is uninitialized. Consider adding the 'required' modifier or declaring the field as nullable.
Assets/DCL/UI/Profiles/Names/Tests/ProfileNameEditorControllerShould.cs:25  CSharpWarnings::CS8618  Non-nullable field 'viewGameObject' is uninitialized. Consider adding the 'required' modifier or declaring the field as nullable.
Assets/DCL/UI/Profiles/Names/Tests/ProfileNameEditorControllerShould.cs:54  ConditionalAccessQualifierIsNonNullableAccordingToAPIContract  Conditional access qualifier expression is never null according to nullable reference types' annotations
Assets/DCL/UI/Profiles/Names/Tests/ProfileNameEditorControllerShould.cs:86  ParameterHidesMember  Parameter 'profile' hides field 'DCL.UI.ProfileNames.Tests.ProfileNameEditorControllerShould.profile'

[github-actions]

All Unity tests passed ✅

TESTS SUITE	Result	Passed	Failed	Skipped
EditMode	✅ Passed	24456	0	13
PlayMode	✅ Passed	236	0	5