Default copy selection when highlighting text in table cell (#7475)

Co-authored-by: svc-changelog <[email protected]>

Author: cht42

packages/table/changelog/@unreleased/pr-7475.v2.yml

@@ -0,0 +1,5 @@
+type: improvement
+improvement:
+  description: Default copy selection when highlighting text in table cell
+  links:
+  - https://github.com/palantir/blueprint/pull/7475

packages/table/src/tableHotkeys.ts

@@ -452,7 +452,7 @@ export class TableHotkeys {
         const { getCellClipboardData, onCopy } = this.props;
         const { selectedRegions } = this.state;
 
-        if (getCellClipboardData == null || this.grid === undefined) {
+        if (getCellClipboardData == null || this.grid === undefined || window.getSelection()?.toString()) {
             return;
         }