[ftr] migrate "MenuToggle" service to FtrService class

[spalger]

In order to migrate the root test directory to its own TypeScript project that can be ref'd we need to stop returning class expressions from provider functions. Part of #99148

Migrates the "MenuToggle" service to the new FtrService class. Unlike other services this service returned a class which was bound to other services via the provider, and was then instantiated by other services/page objects with unique options when used. This model is entirely flawed and not supported because it relies on using class expressions to define classes which are bound to variables in scope. I have instead moved this to a more classical service class with a create() method, which returns a simple object with open() and close() methods which will allow opening and closing a specific menu.

[elasticmachine]

Pinging @elastic/kibana-qa (Team:QA)

[spalger]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 5695ab0
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Metrics [docs]

Unknown metric groups

References to deprecated APIs

id	before	after	diff
canvas	29	25	-4
crossClusterReplication	8	6	-2
fleet	22	20	-2
globalSearch	4	2	-2
indexManagement	12	7	-5
infra	261	149	-112
lens	67	45	-22
licensing	18	15	-3
lists	239	236	-3
maps	286	208	-78
ml	121	115	-6
monitoring	109	56	-53
securitySolution	386	342	-44
stackAlerts	101	95	-6
total			-342

History

• 💚 Build #127253 succeeded f37c389

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[dmlemeshko]

LGTM

[kibanamachine]

💚 Backport successful

Status	Branch	Result
✅	7.x

This backport PR will be merged automatically after passing CI.