Add "n commits" link to contributors in contributors graph page

[iknowright]

Fixes Issue #29365 and inherit PR #29429

• I should extend the Add "n commits" link to contributors in contributors graph page #29429 fork but the fork is not synced, so I created another PR.
• Use silenced class for the link, as in add .suppressed link class #29847

[lunny]

It's not right when the commits come from the secondary email of the user. But maybe it's hard to resolve it in this PR.

[wxiaoguang]

It's not right when the commits come from the secondary email of the user. But maybe it's hard to resolve it in this PR.

Good enough for most cases. For "different email" cases, there are far more existing problems than this PR.