* fix(proxy): list models from team access groups
* 修复 PR #32599 的类型检查并补齐模型列表回退测试
* fix(proxy): keep a key's own model list narrow when adding team access group models
A key with its own model list was shown every model from its team's access
groups on /v1/models, /v1/model/info and /model_group/info, though auth
denies those calls. Team access group models now widen a key's list only when
the key inherits the team's models. /v1/model/info reuses the shared listing
helper without a catch-all, and route-level tests replace the mock-only ones
* fix(proxy): skip the list build in the unrestricted model info check and test every listing route
The unrestricted check for /v1/model/info only needs to know whether the key
and team lists are empty, so it no longer builds and expands the model list a
second time. The route test now covers /v1/models and /model_group/info next
to both model info routes
* fix(proxy): scope model info for personal and agent keys with no model list
* fix(proxy): keep config keys' team access groups and own-team team_id scope in model listing
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Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>