Auto-completions spec conformance for the QueryExpression

[nadeeshaan]

Description:
$title
https://ballerina.io/spec/lang/master/#query-expr

Tasks to be completed

• Completion item sorting order in from caluse context is not accurate #33861
• Keywords for clauses are not suggested in query expression context #33862
• Completions are not accurate in binary expression node context #33868
• Improve completion sorting in order by context #33882
• The keyword outer is not suggested in query expression context #33888
• Missing visible symbols in Query expression context #33891
• Order direction keywords are not suggested in order-clause context #33895
• Improve sorting in limit expression node context #33903
• Missing completions after stream keyword and table keyword #33931
• On conflict clause not suggested after select clause in query expression context #33934

[anupama-pathirage]

We are closing this issue due to inactivity. If you need further assistance or have additional input, feel free to reopen it. Thank you for helping us maintain a relevant and focused issue list!