Return to using Fira Code as the default monospace font (#31302)

* Return to using Fira Code as the default monospace font.

because Inconsolata lacks Box Drawings and Geometric Shapes glyphs.
Fixes https://github.com/element-hq/element-web/issues/31289
Partially reverts https://github.com/matrix-org/matrix-react-sdk/pull/3008

* fix quotes

* fix tests

* fix quotes

* appease prettier

* fix snapshot tests, hopefully

* more snapshots

res/css/views/settings/encryption/_ChangeRecoveryKey.pcss

@@ -45,7 +45,7 @@
             color: var(--cpd-color-text-secondary);
 
             .mx_KeyPanel_key {
-                font-family: Inconsolata, monospace;
+                font-family: "Fira Code", monospace;
                 /*
                  * From figma https://www.figma.com/design/qTWRfItpO3RdCjnTKPu4mL/Settings?node-id=375-77471&t=t7lozYrSI1AVZZ3U-4
                  */