litmusportal-server / subscriber failing after upgrade from 3.3.0 to 3.5.0

[abdnah]

What happened:

When I upgraded from 3.3.0 to 3.5.0, I had issues with litmusportal-server pod which was logging the following error:

│ {"file":"/gql-server/pkg/database/mongodb/init.go:109","func":"github.com/litmuschaos/litmus/chaoscenter/graphql/server/pkg/database/mongodb.MongoConnection","level":"info","msg":" ││ connected to mongo","time":"2024-03-19T14:59:39Z"} ││ {"error":"(IndexKeySpecsConflict) An existing index has the same name as the requested index. When index names are not specified, they are auto generated and can cause conflicts. P ││ lease refer to our documentation. Requested index: { v: 2, unique: true, key: { environment_id: 1 }, name: "environment_id_1", partialFilterExpression: { is_removed: false } }, e ││ xisting index: { v: 2, unique: true, key: { environment_id: 1 }, name: "environment_id_1" }","file":"/gql-server/pkg/database/mongodb/init.go:270","func":"github.com/litmuschaos/ ││ litmus/chaoscenter/graphql/server/pkg/database/mongodb.(*MongoClient).initAllCollection","level":"fatal","msg":"failed to create indexes for environments collection","time":"2024-0 ││ 3-19T14:59:39Z"}

What you expected to happen:

Upgrade successfull and no issues.

Where can this issue be corrected? (optional)

How to reproduce it (as minimally and precisely as possible):
Upgrade from 3.3.0 to 3.4.0 or to 3.5.0

Anything else we need to know?:
Issue already present in previous release.