fix(backups/_MixinXapiWriter): typo _heathCheckSr → _healthCheckSr (#6969)

Fix `TypeError: Cannot read properties of undefined (reading 'uuid') at #isAlreadyOnHealthCheckSr`

@xen-orchestra/backups/_runners/_writers/_MixinXapiWriter.mjs

@@ -18,7 +18,7 @@ export const MixinXapiWriter = (BaseClass = Object) =>
       const vdiRefs = await xapi.VM_getDisks(baseVm.$ref)
       for (const vdiRef of vdiRefs) {
         const vdi = xapi.getObject(vdiRef)
-        if (vdi.$SR.uuid !== this._heathCheckSr.uuid) {
+        if (vdi.$SR.uuid !== this._healthCheckSr.uuid) {
           return false
         }
       }

CHANGELOG.unreleased.md

@@ -12,6 +12,7 @@
 > Users must be able to say: “I had this issue, happy to know it's fixed”
 
 - [LDAP] Mark the _Id attribute_ setting as required
+- [Incremental Replication] Fix `TypeError: Cannot read properties of undefined (reading 'uuid') at #isAlreadyOnHealthCheckSr` [Forum#7492](https://xcp-ng.org/forum/topic/7492) (PR [#6969](https://github.com/vatesfr/xen-orchestra/pull/6969))
 
 ### Packages to release
 
@@ -29,6 +30,7 @@
 
 <!--packages-start-->
 
+- @xen-orchestra/backups patch
 - xen-api patch
 - xo-server patch
 - xo-server-auth-ldap patch