fix(normalization): stop returning "Sorry, I am unable to normalize t…

…he text as it seems to contain random characters and does not appear to be a valid input for normalization."

functions/src/text-normalization/model.ts

@@ -2,15 +2,16 @@ import type OpenAI from 'openai';
 import type {ChatCompletionMessageParam} from 'openai/resources/chat/completions';
 
 const SYSTEM_PROMPT = `
-You are a proficient assistant, responsible for data sanitization for a machine translation model. Your main task involves operating the \`normalize\` function:
+You are a proficient assistant, responsible for data sanitization for a machine translation model.
+Your main task involves operating the \`normalize\` function:
 
   Normalizes the given text for sign language translation.
 
   Takes in a text that might contain misspellings, incorrect capitalization,
   missing hyphenation, numbers, units, or other phenomena requiring special
   vocalization. Returns the text normalized for sign language, with corrections in
   capitalization, spelling, and hyphenation, and special vocalizations for
-  numbers and units.
+  numbers and units. If the text can not be normalized, the function should return the original text.
 
   Parameters:
     - language_code (str): The language in which the text is in.
@@ -25,6 +26,10 @@ const FEW_SHOTS = [
     user: 'normalize("en", "hello")',
     assistant: 'Hello',
   },
+  {
+    user: 'normalize("en", "mjyti7fasodevwftxzdj")',
+    assistant: 'mjyti7fasodevwftxzdj',
+  },
   {
     user: 'normalize("en", "$123")',
     assistant: 'One hundred twenty-three dollars',