fix(hot fix): disable sorting for 'image' column (#2096)

## Description
This PR disables image sort in dynamic material table

## Motivation
Sorting image does not give any value

## Fixes:
Please provide a list of the fixes implemented in this PR

* Items added

## Changes:
Please provide a list of the changes implemented by this PR

* changes made

## Tests included
- [ ] Included for each change/fix?
- [ ] Passing? (Merge will not be approved unless this is checked)

## Documentation
- [ ] swagger documentation updated \[required\]
- [ ] official documentation updated \[nice-to-have\]

### official documentation info
If you have updated the official documentation, please provide PR # and
URL of the pages where the updates are included

## Backend version
- [ ] Does it require a specific version of the backend
- which version of the backend is required:

## Summary by Sourcery

Enhancements:
- Prevent image columns from being sortable by adding a check to the
disabled sorting condition in the table header

Author: Junjiequan

src/app/datasets/dataset-table/dataset-table.component.ts

@@ -471,6 +471,7 @@ export class DatasetTableComponent implements OnInit, OnDestroy {
 
         if (column.name === "image") {
           convertedColumn.renderImage = true;
+          convertedColumn.sort = "none";
         }
 
         if (column.name === "instrumentName") {