fix: skip empty text instance creation in jsx conditions

[jeetiss]

Fix #1602

[diegomura]

@jeetiss I resume this. I think throwing in these cases is too agressive. On this PR I just ignore these cases with a warning

[likyh]

Hi, I think there are some mistakes here. If we haven't push these node, that may got error when insertBefore called.

    insertBefore(parentInstance, child, beforeChild) {
      const index = parentInstance.children?.indexOf(beforeChild);

      if (index === undefined) return;

      if (index !== -1 && child)
        parentInstance.children.splice(index, 0, child);
    },

child will be droped if beforeChild is not OrphanTextInstance

[jeetiss]

Could you provide a test that shows the error?

[likyh]

import { Document, Font, Image, Link, Page, PDFViewer, StyleSheet, Text, View } from '@react-pdf/renderer'
import ReactMarkdown from 'react-markdown'
import { ReactMarkdownProps } from 'react-markdown/lib/ast-to-react'

const App = () => (
  <PDFViewer style={{ width: '100%', height: 800 }}>
    <Document>
      <Page style={styles.body}>
        {/*<Text>*/}
        <ReactMarkdown components={{
          h1: ({ children }: ReactMarkdownProps) => <Text>{children}</Text>,
          p: ({ children }: ReactMarkdownProps) => <Text>{children}</Text>,
        }}>{`# a
b`}</ReactMarkdown>
        {/*</Text>*/}
      </Page>
    </Document>
  </PDFViewer>
)

if add <Text> out of ReactMarkdown:

Actually, That can be found without ReactMarkdown. But I don't know when will insertBefore be called.