Resolves: tdf#114185 force KeywordLocalization::LocaleLegacy

... in GetPreviewStringGuess() that is used in Calc TEXT()
spreadsheet function, if the format code didn't resolve as English
or the format code needs to be (re)parsed otherwise as locale
dependent.

Also SvNumberFormatterServiceObj::convertNumberToPreviewString()
(XNumberFormatPreviewer::convertNumberToPreviewString()) if
bAllowEnglish==true.

Change-Id: I7c4b1a610d2bcb20fe0f0ae06efc81f998cae048

svl/source/numbers/zforlist.cxx

@@ -1727,6 +1727,8 @@ bool SvNumberFormatter::GetPreviewStringGuess( const OUString& sFormatString,
                                                               pEntry->GetFormatstring() ) )
             {
                 // other Format
+                // Force locale's keywords.
+                pFormatScanner->ChangeIntl( ImpSvNumberformatScan::KeywordLocalization::LocaleLegacy );
                 sTmpString = sFormatString;
                 pEntry.reset(new SvNumberformat( sTmpString, pFormatScanner,
                                              pStringScanner, nCheckPos, eLnge ));
@@ -1747,6 +1749,8 @@ bool SvNumberFormatter::GetPreviewStringGuess( const OUString& sFormatString,
                                                                     pEntry2->GetFormatstring() ) )
                 {
                     // other Format
+                    // Force locale's keywords.
+                    pFormatScanner->ChangeIntl( ImpSvNumberformatScan::KeywordLocalization::LocaleLegacy );
                     sTmpString = sFormatString;
                     pEntry.reset(new SvNumberformat( sTmpString, pFormatScanner,
                                                  pStringScanner, nCheckPos, eLnge ));