fix: ensures sessions are listed in public/speakers by handling errors

[shreyanshdwivedi]

Fixes #3043

Short description of what this resolves:

Session of the Speaker are not getting listed under Its Heading on Public Pages due to :

• html-safe not a helper error

Changes proposed in this pull request:

• removes html-safe helper
• adds a condition to add a subheading Microlocation on speaker-item to increase the understanding.

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[kushthedude]

@shreyanshdwivedi The following solves the speaker tab issue too 🎉 , All the speakers are getting loaded on one go , just one improvement i could suggest ,Please remove the highlighting of session name and time , Its looking very weird on the public page

[shreyanshdwivedi]

@kushthedude actually the highlighting of session name and time depends on track a user selects. You remember while creating an event we used to select track and color? That color is being used here. It signifies the track

[kushthedude]

With this #3075 is also solved except the dependancy issue ,Which i will see today if i could find any alternatives

[shreyanshdwivedi]

@kushthedude @ritikamotwani I just made a small change on line 64 and force pushed. Lost your review. Please review again

[uds5501]

This looks good!

[niranjan94]

Please use the css helper instead of concat

[shreyanshdwivedi]

@niranjan94 I've updated the helper. Please review :)