REF: Move non-raising parts of array_to_datetime outside of try/except
Bit by bit we untangle this function.
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=h1) Report
> Merging [#24032](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/5b6b346b9db57b610df2965f60753473ef16e16f?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/24032/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #24032   +/-   ##
=======================================
  Coverage   42.46%   42.46%           
=======================================
  Files         161      161           
  Lines       51557    51557           
=======================================
  Hits        21892    21892           
  Misses      29665    29665
```

| Flag | Coverage Δ | |
|---|---|---|
| #single | `42.46% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=footer). Last update [5b6b346...7ea65d1](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=h1) Report
> Merging [#24032](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/5b6b346b9db57b610df2965f60753473ef16e16f?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/24032/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #24032   +/-   ##
=======================================
  Coverage   42.46%   42.46%           
=======================================
  Files         161      161           
  Lines       51557    51557           
=======================================
  Hits        21892    21892           
  Misses      29665    29665
```

| Flag | Coverage Δ | |
|---|---|---|
| #single | `42.46% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=footer). Last update [5b6b346...7ea65d1](https://codecov.io/gh/pandas-dev/pandas/pull/24032?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 let me look one more after this independent of #24006. thanks