Enhance: Improve loading UX by disabling submit button during scan

[Khushi5623]

Changes Made

• Disabled scan submit button while scanning is in progress
• Re-enabled button after scan completes or fails
• Covered all cases: success, error, timeout, and network failure

Problem

Previously, users could trigger multiple scan requests by clicking the submit button multiple times during an ongoing scan. This could lead to duplicate requests and poor user experience.

Solution

Added logic to disable the submit button during scanning and re-enable it once the process completes or fails.

Impact

• Prevents duplicate scan requests
• Improves user experience
• Adds professional loading behavior
• Ensures consistent UI state across all scenarios

[Stanzin7]

@Khushi5623 can you upload a reference screenshot of before and after for a faster review. Second thing please make sure the npm audit is run and make sure all the checks are passing above.

[sapnilbiswas]

@Khushi5623 contains conflict and please fix the failed tests