Improper use of role attribute on form on News Feed

[MartinPaulEve]

Moved from MESH-Research/knowledge-commons-profiles#382 (originally by @gmeben)

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Area of site: News Feed
URL: https://hcommons-staging.org/activity/

Description
The "What's new, ___?" form has a role attribute with the improper value of complementary.

Form elements are only allowed these values for that attribute:

• form (not recommended)
• none
• presentation
• search

Source: https://www.w3.org/TR/html-aria/#el-form

Recommendation

Either of these should fix the issue:

1. Remove the role attribute
2. Set the value of the role attribute to none or an empty string