bug(sil_khmer): word picked from the word suggestion also replace the symbols next to the letter

[Meng-Heng]

The behavior of the issue (Video).

Details: If a symbol is standing next to the letter that is being predicted for words then when the word is chosen (clicked) the symbols would disappear too.
Symbol: ៗ, (), #, $, @, []...etc.
Please let me know if more information is needed.

Keyman apps

• Keyman Developer
• Keyman for iOS

Keyboard name

• sil_khmer

Keyman version

• 16.0.144-stable (Keyman Developer)
• 17.0.257-alpha (Keyman for iOS)

Operating system

• Windows 10
• iOS version 16.3.1

Keyboard version

• 1.5

Language name

• Khmer

Additional context

• https://keyman.com/keyboards/sil_khmer?bcp47=km

Relevant issue

• bug: khmer model custom wordbreaker issues #230