Share a Project Space via OCIS API make the Webclient hung

## Describe the bug
After i share a Project Space with an User via ocis grpc api, the Web UI get non functional an Stuck.
The grpc Call returns no error.
In the Console i get following error:

Font Awesome Free 6.5.1 by @fontawesome - https://fontawesome.com
License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License)
Copyright 2023 Fonticons, Inc.

index.html-UdMqTK0y.mjs:5 ownCloud Web UI 10.0.0
index.html-UdMqTK0y.mjs:5 Infinite Scale 6.2.0 Community
PortalTarget.vue_vue_type_script_lang-CAy3JYul.mjs:13 TypeError: Cannot read properties of undefined (reading '0')
at Sb (PortalTarget.vue_vue_type_script_lang-CAy3JYul.mjs:22:58990)
at index.html-UdMqTK0y.mjs:5:10038
at Array.map ()
at Object.listMyDrives (index.html-UdMqTK0y.mjs:5:10031)
at async Jf (PortalTarget.vue_vue_type_script_lang-CAy3JYul.mjs:48:78389)
at async Promise.all (index 1)
at async Proxy.loadSpaces (PortalTarget.vue_vue_type_script_lang-CAy3JYul.mjs:48:79609)
at async HI.Z.immediate (index.html-UdMqTK0y.mjs:5:204160)

## Steps to reproduce
1. call the API as follows
shareResp, err := a.gateway.CreateShare(a.context,
&v1beta13.CreateShareRequest{
ResourceInfo: space.GetRootInfo(),
Grant: &v1beta13.ShareGrant{
Grantee: &providerv1beta1.Grantee{
Type: providerv1beta1.GranteeType_GRANTEE_TYPE_USER,
Id: &providerv1beta1.Grantee_UserId{UserId: usrresp.GetUsers()[0].Id},
},
Permissions: &v1beta13.SharePermissions{
Permissions: &providerv1beta1.ResourcePermissions{
AddGrant: true,
GetPath: true,
GetQuota: true,
InitiateFileDownload: true,
ListContainer: true,
ListRecycle: true,
Stat: true},
},
},
},
)

3. Try to login in the OCIS Web Client

## Expected behavior
If the grpc Request get invalid Parameters, for example Grants. The Request should return an error.
The UI shoud ignore, or log invalid Data.

## Actual behavior
The Web Client hang