CLDR-18464 Add islamic-inverse eras

Author: sffc

common/supplemental/supplementalData.xml

@@ -4535,30 +4535,35 @@ XXX Code for transations where no currency is involved
         <calendar type="islamic">
           <calendarSystem type="lunar" />
           <eras>
+              <era type="-1" end="622-7-14" code="islamic-inverse" aliases="bh"/>
               <era type="0" start="622-7-15" code="islamic" aliases="ah"/>
           </eras>
         </calendar>
         <calendar type="islamic-civil">
           <calendarSystem type="lunar" />
           <eras>
+              <era type="-1" end="622-7-15" code="islamic-civil-inverse" aliases="bh"/>
               <era type="0" start="622-7-16" code="islamic-civil" aliases="islamicc ah"/>
           </eras>
         </calendar>
         <calendar type="islamic-rgsa">
           <calendarSystem type="lunar" />
           <eras>
+              <era type="-1" end="622-7-14" code="islamic-rgsa-inverse" aliases="bh"/>
               <era type="0" start="622-7-15" code="islamic-rgsa" aliases="ah"/>
           </eras>
         </calendar>
         <calendar type="islamic-tbla">
           <calendarSystem type="lunar" />
           <eras>
+              <era type="-1" end="622-7-14" code="islamic-tbla-inverse" aliases="bh"/>
               <era type="0" start="622-7-15" code="islamic-tbla" aliases="ah"/>
           </eras>
         </calendar>
         <calendar type="islamic-umalqura">
           <calendarSystem type="lunar" />
           <eras>
+              <era type="-1" end="622-7-14" code="islamic-umalqura-inverse" aliases="bh"/>
               <era type="0" start="622-7-15" code="islamic-umalqura" aliases="ah"/>
           </eras>
         </calendar>