Suppress exceptions that occur when reading properties

[Ovizro]

A simple fix for #97 .

[gaogaotiantian]

要写个test case~保证覆盖率。同时避免regression。

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (096bc73) 100.00% compared to head (d6cf58d) 100.00%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #98 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 5 5 Lines 378 381 +3 ========================================= + Hits 378 381 +3 ``` | [Files Changed](https://app.codecov.io/gh/gaogaotiantian/objprint/pull/98?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Tian+Gao) | Coverage Δ | | |---|---|---| | [src/objprint/objprint.py](https://app.codecov.io/gh/gaogaotiantian/objprint/pull/98?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Tian+Gao#diff-c3JjL29ianByaW50L29ianByaW50LnB5) | `100.00% <100.00%> (ø)` | |

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[Ovizro]

简单写了一个测试，天哥看看可以吗