propagates NaNs for paddle.angle

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PR Category

Execute Infrastructure

PR Types

Improvements

Description

fix:

• https://github.com/PaddlePaddle/Paddle/issues/73199

propagates NaNs for paddle.angle, which is same as numpy and torch. Also a clear way to deal with nan.

TODO

• [x] update the docstring
• [ ] update the cn docs
• [ ] pass ci tests

[paddle-bot[bot]]

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/re-run all-failed