fix(accessibility): add alt text to post images

[mayurigade-hub]

Related Issue

• Closes: [Bug]: Add missing alt text to post images for accessibility #744

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Description

Improved accessibility by adding meaningful alt attributes to post images.

Previously, post images were rendered without alt text (or with empty alt attributes), making it difficult for screen reader users to understand image content.

This change ensures that images include descriptive alt text using available post metadata such as captions or descriptions. When no suitable description is available, a fallback format such as:

"Post image by {username}"

is used.

Changes made:

• Added meaningful alt text for post images
• Used post caption/description when available
• Added a fallback alt value when metadata is missing
• Improved accessibility and WCAG compliance

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How Has This Been Tested?

• Opened posts containing images and inspected rendered image elements
• Verified that images now include non-empty alt attributes
• Tested images with captions/descriptions and confirmed those values are used
• Tested images without captions and confirmed fallback alt text is applied
• Verified no TypeScript or linting errors after the changes

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Screenshots (if applicable)

N/A

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Type of Change

• Bug fix
• New feature
• Code style update
• Breaking change
• Documentation update

[vercel]

@mayurigade-hub is attempting to deploy a commit to the Shivayan's projects Team on Vercel.

A member of the Team first needs to authorize it.

[mayurigade-hub]

Hello @Shivayan09
Please review this
Thank you!

[Shivayan09]

Many unrelated lines of code has been changed which is not related to the issue. Unrelated changes make it harder to review the actual change, so kindly revert those