Typography malfunctioning when Text contains Hangul characters

### Description

When using a `TextBlock`, `Typography.*` does not work properly if `Text` contains Hangul letters.

Details:
* A "Hangul character" is one of any Hangul syllables, vowels and consonants, no matter contemporary or obsolete (옛한글). The full list is available at Wikipedia ([syllables](https://en.wikipedia.org/wiki/Hangul_Syllables), [vowels/consonants](https://en.wikipedia.org/wiki/List_of_Hangul_jamo)). "Hanyang Private Use" characters do not cause this problem.
* If the `Text` value contains a Hangul character, any character after it will not get affected by `Typography.*` properties, unless "blocked" by any character(s) with other types like:
* a CJK Ideograph (either unified or compatibility)
* a hiragana or a katakana
* a Latin character
* These types of character cannot be used for blocking:
* Hangul characters
* whitespaces
* punctuations
* digits

For example, if `Typography.*` properties are same as the repro below, `Text="가000A000"` looks like this: (Note the difference of `0`s with/without a slash in each)

### Reproduction Steps

```xaml

```

### Expected behavior

`Typography.*` should be applied.

Stylistic sets and their effects for *Pretendard Variable* are available from its [official page](https://cactus.tistory.com/306).


### Actual behavior

`Typography.*` are not applied.


### Regression?

_No response_

### Known Workarounds

The "Expected Behavior" shown above is achieved with a workaround like this:

```xaml

```

### Impact

_No response_

### Configuration

* Windows 10 version 22H2 (build 19045.2846) on x64
* .NET SDK 7.0.203 (retrieved from `dotnet --list-sdks`)
* Visual Studio 2022 version 17.5.4
* `#error version` tells `컴파일러 버전: '4.5.2-3.23171.7 (d17f7415)'. 언어 버전: 11.0.`
(translated into English: `Compiler version: '4.5.2-3.23171.7 (d17f7415)'. Language version: 11.0.`)

### Other information

_No response_