Add sidecar, by default the newly added sidecar tab should be selected

[kingsd041]

Setup

• Rancher version: v2.6.9
• Browser type & version: 107.0.5304.87

Describe the bug

Add sidecar, by default the newly added sidecar tab should be selected

To Reproduce

1. Add a new sidecar to the UI
2. View the default sidecar display

Result
container-0 is selected by default

Expected Result

The newly added sidecar tab should be selected by default, which is container-1 in the example

Screenshots

Additional context

[catherineluse]

Moving this issue into the review column because there is a PR to fix it #7403

[sowmyav27]

Reproduced the issue on 2.6.9

On 2.7-head commit id: 65089ee

• On a workload --> Add sidecar --> Container-1 is selected and listed by default