fixed tag controller error

[amanraval76593]

Description

Fixes a bug where the TextfieldTagsController was not disposed properly, leading to resource leakage. This issue occurred when navigating away from screens that used the TextfieldTagsController without properly disposing of it.

Change:
Implemented a solution by adding a new function, resetTagController(), which disposes of the previously created TextfieldTagsController instance and creates a new one before navigating to the Create Room page.

Fixes #310

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Tested manually on the physical device.

Before:-

first.mp4

After:-

second.mp4

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes #xxxx (Replace xxxx with the GitHub issue number)
• Tag the PR with the appropriate labels

[amanraval76593]

@chandansgowda please review the changes

[Aarush-Acharya]

Good Work @amanraval76593 🚀

This is good to merge will merge after the previously scheduled PR's are merged

[vrundraval24]

Hey, @amanraval76593 this branch has merge conflicts due to the merging of previously scheduled branches. Please resolve the merge conflicts. We will wait for your response.