Coverage not working with mypy ignores and vague errors

Bug Report

(A clear and concise description of what the bug is.)
Coverage not showing the same result as mypy

To Reproduce

class A(BaseModel):
   b: str = Field(default=..., description="some var")

Expected Behavior
To get the code coverage based on what I get with the mypy src call

Actual Behavior

I'm getting low coverage despite mypy not complaining after these ignores
Ignore missing imports and no warn unused ignores just doesnt apply to coverage, it shows passed when using mypy src but fails on coverage

Your Environment

• Mypy version used: latest
• Mypy command-line flags: mypy
  --disallow-untyped-calls
  --disallow-untyped-defs
  --check-untyped-defs
  --follow-imports=normal
  --explicit-package-bases
  --allow-untyped-globals
  --ignore-missing-imports
  --no-warn-unused-ignores
  --warn-return-any
  .
• Mypy configuration options from mypy.ini (and other config files):
• Python version used: 3.13.2

首先，使用提供的 Python 代码片段和列出的 mypy 命令行标志复现报告，然后比较正常的 mypy 结果与 coverage 结果。该 issue 没有指定实现文件或测试，因此请先找到 coverage 入口点和现有的 coverage 测试，再继续进行。当 mypy 与 coverage 对被忽略的 import 和未使用的 ignore 的处理保持一致时，即视为完成。