Simplify the interpreter's (type, val, tb) exception representation

BPO | [45711](https://bugs.python.org/issue45711)
--- | :---
Nosy | @gvanrossum, @terryjreedy, @scoder, @vstinner, @markshannon, @brandtbucher, @da-woods, @iritkatriel
PRs | <li>python/cpython#29404</li><li>python/cpython#29495</li><li>python/cpython#29518</li><li>python/cpython#29528</li><li>python/cpython#29627</li><li>python/cpython#29780</li><li>python/cpython#29890</li><li>python/cpython#29922</li><li>python/cpython#30122</li><li>python/cpython#30289</li><li>python/cpython#30849</li>

<sup>*Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.*</sup>

<details><summary>Show more details</summary><p>

GitHub fields:
```python
assignee = None
closed_at = <Date 2022-03-13.19:33:16.899>
created_at = <Date 2021-11-04.11:29:47.242>
labels = ['interpreter-core', '3.11', 'performance']
title = "Simplify the interpreter's (type, val, tb) exception representation"
updated_at = <Date 2022-03-13.19:33:16.899>
user = 'https://github.com/iritkatriel'
```

bugs.python.org fields:
```python
activity = <Date 2022-03-13.19:33:16.899>
actor = 'iritkatriel'
assignee = 'none'
closed = True
closed_date = <Date 2022-03-13.19:33:16.899>
closer = 'iritkatriel'
components = ['Interpreter Core']
creation = <Date 2021-11-04.11:29:47.242>
creator = 'iritkatriel'
dependencies = []
files = []
hgrepos = []
issue_num = 45711
keywords = ['patch']
message_count = 31.0
messages = ['405681', '405839', '405849', '406114', '406120', '406209', '406238', '406983', '406984', '407402', '407597', '408043', '408768', '408786', '409453', '411497', '412264', '412265', '412270', '412272', '412273', '412275', '412281', '412289', '412290', '412292', '412303', '412304', '412316', '414482', '415086']
nosy_count = 8.0
nosy_names = ['gvanrossum', 'terry.reedy', 'scoder', 'vstinner', 'Mark.Shannon', 'brandtbucher', 'da-woods', 'iritkatriel']
pr_nums = ['29404', '29495', '29518', '29528', '29627', '29780', '29890', '29922', '30122', '30289', '30849']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue45711'
versions = ['Python 3.11']
```

</p></details>


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Simplify the interpreter's (type, val, tb) exception representation #89874

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BPO	45711
Nosy	@gvanrossum, @terryjreedy, @scoder, @vstinner, @markshannon, @brandtbucher, @da-woods, @iritkatriel
PRs	bpo-45711: Use _PyErr_ClearExcState instead of setting only exc_value… #29404 bpo-45711: remove unnecessary DUP_TOP and POP in exception handling #29495 bpo-45711: assert that the type of exc_info is redundant #29518 bpo-45711: Re-bump the magic number and update doc #29528 bpo-45711: use exc_value instead of exc_type to determine if exc_info is valid. Add more assertions. #29627 bpo-45711: Change exc_info related APIs to derive type and traceback from the exception instance #29780 bpo-45711: [asyncio] Normalize exceptions immediately after Fetch, before they are stored as StackItem, which should be normalized #29890 bpo-45711: Remove unnecessary normalization of exc_info #29922 bpo-45711: Remove type and traceback from exc_info #30122 bpo-46219, 46221: simplify except* implementation following exc_info changes. Move helpers to exceptions.c. Do not assume that exception groups are truthy. #30289 bpo-45711: move whatsnew entries which are incorrectly listed under N… #30849

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Simplify the interpreter's (type, val, tb) exception representation #89874

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