fix(editor): keep decimal values when an uploaded file is edited manually

Confirming the "source file will be discarded" warning coerced every
numeric column of the preview with parseInt, which truncated the
fraction: 0.901045951946194 became 0, and 1234.56 became 1234.
parseFloat converts the same values without dropping precision, and a
cell the parser could not read as a number is left as text so the
editor's numeric validation flags it instead of showing NaN.

Adds an Excel spec case that reads the first data row before and after
the switch to edit mode and asserts the decimal value survives.

client/cypress/e2e/excel.cy.ts

@@ -399,6 +399,26 @@ context('excel tests: ', function () {
     })
   })
 
+  it('25 | Keeps decimals when the upload preview becomes a manual edit', () => {
+    openTableFromTree(libraryToOpenIncludes, 'mpe_x_test')
+
+    // Entering manual edit mode discards the source file but keeps the values
+    // parsed from it. SOME_NUM holds 0.901045951946194 in the first data row
+    // of the fixture, so a truncated or zeroed cell fails the assertion.
+    attachExcelFile('regular_excel.xlsx', () => {
+      getFirstRowCells().then((previewCells) => {
+        expect(previewCells).to.include(decimalSomeNum)
+
+        cy.get('.btn-upload-preview.btn-primary').click()
+        cy.get('.modal-footer .btn-success-outline').click()
+
+        getFirstRowCells().then((editCells) => {
+          expect(editCells).to.include(decimalSomeNum)
+        })
+      })
+    })
+  })
+
   // Large files break Cypress
 
   // it ('? | Uploads Excel with size of 5MB', (done) => {
@@ -476,6 +496,19 @@ const attachExcelFile = (excelFilename: string, callback?: any) => {
     })
 }
 
+const decimalSomeNum = '0.901045951946194'
+
+// The row's cell texts, without depending on column positions: the preview
+// grid renders row-status and delete cells in an order that varies.
+const getFirstRowCells = () =>
+  cy
+    .get('#hotTable', { timeout: longerCommandTimeout })
+    .find('div.ht_master.handsontable tbody tr')
+    .eq(0)
+    .then(($row) =>
+      Array.from($row[0].children).map((cell: any) => cell.innerText.trim())
+    )
+
 const submitExcel = (callback?: any) => {
   cy.get('.buttonBar button.preview-submit', { timeout: longerCommandTimeout })
     .click()

client/src/app/editor/editor.component.ts

@@ -1363,8 +1363,14 @@ export class EditorComponent
             colSpecs.TYPE === 'num' &&
             !colSpecs.DDTYPE.includes('TIME') &&
             !colSpecs.DDTYPE.includes('DATE')
-          )
-            row[colKey] = parseInt(row[colKey])
+          ) {
+            const numericValue = parseFloat(row[colKey])
+
+            // A cell the file parser could not read as a number stays as it
+            // was: the editor's numeric validation then flags it as text,
+            // where a NaN would render as an empty cell.
+            if (!Number.isNaN(numericValue)) row[colKey] = numericValue
+          }
         }
       }
     }