fix(tooltip): DLT-1846 inverted not working properly

[juliodialpad]

Fix Tooltip - Inverted not working properly

Obligatory GIF (super important!)

🛠️ Type Of Change

These types will increment the version number on release:

• Fix

📖 Jira Ticket

https://dialpad.atlassian.net/browse/DLT-1846

📖 Description

• Change theme prop default value from 'undefined' to 'null'.

💡 Context

• The theme was not reverting correctly after toggling inverted prop.

📝 Checklist

For all PRs:

• I have ensured no private Dialpad links or info are in the code or pull request description (Dialtone is a public repo!).
• I have reviewed my changes.

For all Vue changes:

• I have made my changes in Vue 2 and Vue 3. Note: you may sync your changes from Vue 2 to Vue 3 (or vice versa) using the ./scripts/dialtone-vue-sync.sh script. Read docs here: Dialtone Vue Sync Script

📷 Screenshots / GIFs

• Before

Screen.Recording.2024-07-08.at.9.48.26.a.m.mov

• After

Screen.Recording.2024-07-08.at.9.45.59.a.m.mov

[github-actions]

Please add either the visual-test-ready or no-visual-test label to this PR depending on whether you want to run visual tests or not.
It is recommended to run visual tests if your PR changes any UI. ‼️

[github-actions]

✔️ Deploy previews ready!
😎 Dialtone preview: https://dialtone.dialpad.com/deploy-previews/pr-398/
😎 Dialtone-vue 2 preview: https://dialtone.dialpad.com/vue/deploy-previews/pr-398/
😎 Dialtone-vue 3 the preview: https://dialtone.dialpad.com/vue3/deploy-previews/pr-398/