Adds Script scriptName field

[marklundin]

Adds support for explicit naming of ESM Scripts using a static scriptName field.

class Rotator extends Script {
  static scriptName = 'customRotator'
}

entity.script.create(Rotator)
console.log(entity.script.customRotator);

This addresses #7580 where class names can get mangled whilst adding support for more verbose script names
and custom casing, both of which have been requested by users.

It handles both cases of loading Scripts as Assets, and also direct insantiation via entity.script.create(Class)

Fixes #7580. Tests included

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[Copilot]

Pull Request Overview

This PR adds explicit support for naming ESM Script classes via a static "scriptName" field, with appropriate warnings for missing definitions.

• Updated script name resolution to prefer the static "scriptName" property.
• Added warning messages when ESM Scripts do not specify a "scriptName".
• Extended unit tests to validate correct script naming behavior and fallback mechanisms.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
test/framework/components/script/component.test.mjs	Added tests for warning messages and for correct script name registration.
src/framework/script/script.js	Updated getScriptName to return a static "scriptName" if available.
src/framework/handlers/script.js	Added warning and fallback logic based on the "scriptName" property of script classes.
src/framework/components/script/component.js	Modified script name resolution and warning logic to enforce explicit "scriptName" usage.

Comments suppressed due to low confidence (1)

src/framework/components/script/component.js:712

• [nitpick] Consider caching the result of getScriptName(scriptType) in a variable to avoid calling it twice in this block, which would improve code clarity.

scriptType.__name ??= toLowerCamelCase(getScriptName(scriptType));

[mvaligursky]

Looks good. It'd be good to update engine supplied scripts https://github.com/playcanvas/engine/tree/main/scripts/esm to this, and also at least one (rotator) in the examples
Separate PR is fine of course.