When i put a program.it was converted some different emoji

the code is <3 is covert into heart emoji.
I facing this problem every day.

OS:Linux mint 20.2
cinnamon 64-bit

jitsi-
package-org.jitsi.jitsi-meet
version-2022.3.1
size-207.2MB
remote- flathub
Architecture- x86_64
Branch-stable

Steps to reproduce
1).open jitsi.
2).click the chat box .
3).put:D and <3
4).then post.
Actual result is : it was converted emoji.

expected resule is: Do not change the code to emoji.

Please don’t make duplicated posts.