Don't regard 1024px width viewport as mobile

Currently we treat 1024px as mobile in some places (e.g. `isMobile` in
nextcloud-vue) and as not mobile yet in others (e.g. in mobile.css).

This commit changes `mobile.scss` to treat viewports smaller than 1024px
as mobile.

This PR accompanies https://github.com/nextcloud/nextcloud-vue/pull/3768

Both are required to fix
https://github.com/nextcloud/nextcloud-vue/issues/3758.

Signed-off-by: Jonas <jonas@freesources.org>

core/css/mobile.css.map

@@ -1 +1 @@
-{"version":3,"sourceRoot":"","sources":["mobile.scss","variables.scss"],"names":[],"mappings":"AAEA,2CAGC,UACC,4BACA,qBAID,iBACC,wBAID,YACC,WACA,yBACA,sBAID,0BACC,6BACA,eACA,0BAGA,6BACC,wBAIF,0CACC,cAGD,8BACC,SACA,cAID,kBACC,wCACA,cAEA,iBAEA,eACA,uCACC,aAED,8BACC,aACA,mDACC,gBAOF,gDACC,4BAED,qDACC,eACA,gCACA,ICoCa,KDnCb,OACA,WACA,YACA,aACA,sCACA,eACA,WACA,wBAED,2CACC,4BAKF,uBACC,eACA,gCACA,OACA,WACA,YACA,aACA,eACA,WAED,0DAEC,UAID,6CACC,kBAID,kDACC,0BAED,8CACC,wBAGD,wBACC,kBAID,gBACC,aAED,+BACC,4BAID,2MAIC,aAED,kDACC,eAGD,qCACC,UAMF,0CACC,gCACC,6BACA,eACA,uCACC,wBAMA,4CACC,cAGF,iCACC,gCACA,iDACA,SACA,YACA,SACA,QACA,kBACA,oBACA,WACA,aACA,aAID,0CACC","file":"mobile.css"}
+{"version":3,"sourceRoot":"","sources":["mobile.scss","variables.scss"],"names":[],"mappings":"AAEA,wCAGC,UACC,4BACA,qBAID,iBACC,wBAID,YACC,WACA,yBACA,sBAID,0BACC,6BACA,eACA,0BAGA,6BACC,wBAIF,0CACC,cAGD,8BACC,SACA,cAID,kBACC,wCACA,cAEA,iBAEA,eACA,uCACC,aAED,8BACC,aACA,mDACC,gBAOF,gDACC,4BAED,qDACC,eACA,gCACA,ICoCa,KDnCb,OACA,WACA,YACA,aACA,sCACA,eACA,WACA,wBAED,2CACC,4BAKF,uBACC,eACA,gCACA,OACA,WACA,YACA,aACA,eACA,WAED,0DAEC,UAID,6CACC,kBAID,kDACC,0BAED,8CACC,wBAGD,wBACC,kBAID,gBACC,aAED,+BACC,4BAID,2MAIC,aAED,kDACC,eAGD,qCACC,UAMF,0CACC,gCACC,6BACA,eACA,uCACC,wBAMA,4CACC,cAGF,iCACC,gCACA,iDACA,SACA,YACA,SACA,QACA,kBACA,oBACA,WACA,aACA,aAID,0CACC","file":"mobile.css"}

core/css/mobile.scss

@@ -1,6 +1,6 @@
 @use 'variables';
 
-@media only screen and (max-width: variables.$breakpoint-mobile) {
+@media only screen and (width < variables.$breakpoint-mobile) {
 
 	/* position share dropdown */
 	#dropdown {