fix(tooltip): changing direction causes invalid position

[oliversalzburg]

Providing the initial origin through the panelClass of the panel is not the right approach. mdPanel remembers the original panel configuration and the provided panelClass and will restore it when the element is reused. This results in the new origin and the default (bottom) origin style to be placed on the element at the same time.

Fixes #10405

PR Checklist

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• Tests for the changes have been added (for bug fixes / features)
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PR Type

What kind of change does this PR introduce?

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

When the direction of a tooltip is changed, the resulting position will not be correctly applied, resulting in off-center placement of tooltips.

Issue Number: #10405

What is the new behavior?

The tooltip is correctly positioned after the direction was adjusted.

Does this PR introduce a breaking change?

[ ] Yes
[X] No

[Splaktar]

LGTM. Manual tests successful.

[Splaktar]

This is failing the Google presubmit tests. So far any information that I have been given seems to indicate that the failure is a "flake", i.e. completely unrelated to this change.

I am continuing to work with and push for this fix to get in as I don't want to release 1.1.7 without it.

[oliversalzburg]

Awesome. Happy to see this merged :) Well done