[bug]: Tooltip trigger throws errors when trigger content is plain text

[myrta2302]

🐞 Describe the bug

When using <post-tooltip-trigger> with only plain text as content the following errors occur:

1. Uncaught TypeError: Cannot read properties of null (reading 'contextElement')
2. Uncaught (in promise) TypeError: Cannot read properties of null (reading 'getBoundingClientRect')

🛠️ To Reproduce

Steps to reproduce the behavior:

1. Use <post-tooltip-trigger> with text only e.g., <post-tooltip-trigger>Info</post-tooltip-trigger>.
2. Hover on the tooltip.
3. Observe console errors.

✨ Expected behavior

Suggestion (to discuss): It should check if the trigger contains only plain text (or no HTML element) and console.log an error.

Tasks

• Check other triggers for plaintext errors and handle them in the same way as the tooltip