cf login ran through CliCommand() doesn't update LogCacheEndPoint

Please fill out the issue checklist below and provide ALL the requested information.

• I reviewed open and closed github issues that may be related to my problem.
• I tried updating to the latest version of the CF CLI to see if it fixed my problem.
• I attempted to run the command with CF_TRACE=1 to help debug the issue.
• I am reporting a bug that others will be able to reproduce.

Describe the bug and the command you saw an issue with
When calling the cf login command through the plugin.CliConnection.CliCommand() the LogCacheEndPoint in the ~/.cf/config.json file is never updated.
https://github.com/the8tre/cf-cli-login-issue/blob/4d086d0c6fa0ab8f1b439824ab6633700b7ba730/cf_cli_login_issue.go#L28-L31

What happened
As the LogCacheEndPoint is not properly updated, calls to cf logs my-app fail with a Failed to retrieve logs from Log Cache: unexpected status code 404 error.

Expected behavior
The LogCacheEndPoint field of ~/.cf/config.json should be properly updated with the right url using the right CF API domain.

Exact Steps To Reproduce
Here is a GitHub repository with a sample cf cli plugin that reproduces the issue:
https://github.com/the8tre/cf-cli-login-issue#

• Run cf login your-own-parameters
• Check that LogCacheEndPoint in ~/.cf/config.json is properly updated
• Install the sample plugin linked above
• Run cf loginissue some-other-parameters on another CF API endpoint
• Check that LogCacheEndPoint in ~/.cf/config.json is not updated

Provide more context

• platform and shell details:
  • MacOS Tahoe 26.1, any terminal (MacOS Terminal, iTerm, Ghostty)
  • Windows 11 Enterprise - 24H2 - 26100.7092
• version of the CLI you are running:
  • MacOS: cf version 8.16.0+4b92b73.2025-09-18
  • Windows: cf version 8.16.0+4b92b73e4.2025-09-18
• version of the CC API Release you are on

Notes regarding V6 and V7 CLI support:

• V6:
  • Minimum supported version of CF Deployment: v7.0.0 (CAPI Release: 1.74.0 (APIs 2.128.0 and 3.63.0))
  • Maximum supported version of CF Deployment: v13.4.0 (CAPI Release: 1.94.0 (APIs 2.149.0 and 3.84.0))
• V7:
  • Minimum supported version of CF Deployment: v13.5.0 (CAPI Release: 1.95.0 (APIs 2.150.0 and 3.85.0))

Start with the reproduction entry point in cf_cli_login_issue.go, lines 28-31, and trace plugin.CliConnection.CliCommand() while switching between the two CF API endpoints. Compare ~/.cf/config.json after each login, then verify that cf logs my-app uses the updated LogCacheEndPoint and no longer returns the 404 error.