#564 bug at new snippet selection

[vlad1slove1]

BUG #564

• added java language to i18next locales to fix java icon appearance
• fixed handleInputLng() function at NewSnippet.jsx

while testing the code, i've discovered a new bug at modal on new snippet selection:

inside modal we cannot select "java" option because of this block:

const filteredOptions = supportedLanguages.filter((language) =>
        language.toLowerCase().startsWith(inputValue.toLowerCase()),
      );
setSelectedLng(filteredOptions.slice(0, 1));

when we type "java" the filteredOptions will filter all occurences which starts from "java". It means option "javascript" has been included. Array will become like this:

const filteredOptions = ['javascript', 'java'];
// filteredOptions.slice(0, 1) = 'javascript';
setSelectedLng('javascript');

at my variant selection work by next case:

const filteredOptions = supportedLanguages.filter((language) =>
    language.toLowerCase().startsWith(lowerInput),
);

// select exact match, if non existed then select first
const selectedLanguage =
    filteredOptions.find(
        (language) => language.toLowerCase() === lowerInput,
    ) || filteredOptions[0];

setSelectedLng([selectedLanguage]);

icons_fixed.mp4

java_option_bug.mp4

java_option_bug_fixed.mp4