Enhance (community-input-group): change input group min-width

[donnavitan]

Description

• InputGroup min-width is previously set to 200px to ensure search button appears in mobile devices (see #470)

Recommendation

• However, it is recommend to set minimum width to be 100% width of the parent container when in mobile or less than the value of 4 columns in XL breakpoint

Meta

• TDS version (npm or DSM): vX.Y.Z
• Willing to develop solution: No
• Has workaround: Yes
• High impact: No