Revert "fix(doc)!: Always cast datetime, date and time fields (#15891)"

This reverts commit d7789ab6ff.

### BREAKING CHANGE
#### Datetime, Date and Time fields will always be cast to respective objects in `setattr`, this will ensure uniformity while accessing the values, no more `getdate`, `get_datetime`, `to_timedelta` wrapper.
- While importing data, the framework does check for `set_only_once`.
- In normal case scenarios, this will work flawlessly since most date fields might not be set_only_once.
- But in Subscription, the date field is set to `set_only_once` and in `after_insert`, `document.save` is called, and while doing so, `set_only_once` is checked [here](1944a547f9/frappe/model/document.py (L566)).
-This works fine if the data imported is in the correct format.
- If the date's data is not in the correct format, the framework throws an error.
- for eg `06-02-2022 00:00:00 != 06-02-2022`
- fixes [Issue/#15370](https://github.com/frappe/frappe/issues/15370)

> no-docs

feat: configurable location of currency symbol

chore: Remove unused libraries/files and update licenses

ci: Bump mariadb from 10.3 to 10.6

Previously this was done in ERPNext but all currency formatting
functionality depends on this, hence moved to framework. Largely
rewritten from scratch.

ref: https://github.com/frappe/frappe/runs/7175643618

### Issues
In the form timeline we show events like “{user} {created/viewed/edited} this {some_time_ago}”. If user is the current user, we used “You” instead of “Jon Doe”. This works in English, but in other languages it messes up the rest of the sentence.

Because of this, people added wrong translations of “You” that made the grammar work, but also made the message less clear.

Also, the _last viewed_ message used to link to **View Log**. That can be read by system managers only and doesn't hold additional information. So it's just a source of errors for users trying to click on it.

### Fixes

- don't mix up users and salutations. Always show user's full name.
- change the _last viewed_ message to work like the other two, remove link to **View Log**

### Demo

Logged an as Administrator:

English

![Bildschirmfoto 2022-06-30 um 15 28 37](https://user-images.githubusercontent.com/14891507/176689772-dd878c90-4a2c-4a32-aa6c-d2e14a6340e1.png)

German

![Bildschirmfoto 2022-06-30 um 15 28 03](https://user-images.githubusercontent.com/14891507/176689812-ce13bb31-6c70-40f2-8699-6fb0db1d06f9.png)

* chore: warn about missing scheduler / doc events

* fix: pass list instead of filter

filter can only be iterated upon once

* refactor: many typehints in __init__.py

fix: refresh tree when the treeview is  loaded

Translation doesn't make sense without these three fields

* ci: slightly faster patch test

This workflow doesn't seem to properly cache built versions :)

* ci: bump pyenv action to latest version

latest version has fix for tool cache


[skip ci]

ci: use different reference for fetched label in has_label

fix: remove duplicate tracebacks

Not sure why this needs YET ANOTHER separate cache.

- No point in having a copy since there are no customization done.

We dont use pylint and it's not even valid pylint config.

[skip ci]

fix: calendar view set in assign time

also add previous bulk change to git-blame-ignore-revs

refactor: clean up code to py39+ supported syntax

- f-strings instead of format
- latest typing support instead of pre 3.9 TitleCase
- remove UTF-8 declarations.
- many more changes

Powered by https://github.com/asottile/pyupgrade/ + manual cleanups

Since value in DB and value on object can be in different type the
notification gets triggered unnecessarily

e.g. data(2012, 10, 10) != "2012-10-10"